How to Identify a Girl Likes You: Decoding Her Signals and Understanding Her Interest

Navigating the intricate world of romantic signals can sometimes feel like deciphering a secret code. You’ve met someone intriguing, and you’re wondering, “Does she like me?” This question can be a persistent hum in the back of your mind, especially when you find yourself drawn to her. I remember a time, not too long ago, when I was in a similar boat. There was this amazing woman I met through a mutual friend, and we’d have these great conversations, lots of laughs, and I just felt this undeniable connection. But then, the classic dilemma: was it just friendly banter, or was there something more simmering beneath the surface? It’s a feeling many of us have experienced – that mix of hopeful curiosity and cautious uncertainty. Learning how to identify a girl likes you is a skill that can save you a lot of second-guessing and open doors to potentially wonderful relationships. It’s not about mind-reading, but about keen observation, understanding common human behaviors, and recognizing subtle cues that speak volumes. This article aims to equip you with the knowledge and insights to confidently assess a girl’s interest, going beyond the superficial to truly understand her feelings.

The Crucial First Step: It’s All About Observation and Context

Before we dive into specific signs, it’s absolutely vital to understand that no single behavior is a definitive tell-tale sign. What might indicate interest in one person or situation could be entirely different in another. The key to how to identify a girl likes you lies in observing a cluster of behaviors and, crucially, understanding the context in which they occur. Think of it like a detective piecing together clues. One clue might be circumstantial, but several clues pointing in the same direction paint a much clearer picture. So, when you’re wondering if a girl likes you, your first step should always be to become a more astute observer of her actions, words, and even her silences, within the specific environment you share.

Body Language: The Silent Language of Attraction

Often, what someone says is less revealing than how they say it, or even how their body communicates without words. Body language is a powerful, often subconscious, indicator of attraction. When you’re trying to figure out how to identify a girl likes you, paying close attention to her non-verbal cues can be incredibly insightful. These signals, when consistent, can offer a window into her true feelings.

Eye Contact: The Windows to the Soul, and Maybe More
This is probably one of the most talked-about signs, and for good reason. When a girl is interested, her eyes tend to linger. It’s not just a fleeting glance; it’s a sustained look, perhaps a little longer than usual for casual conversation. She might make eye contact when you’re speaking, when you’re not speaking, or even across a crowded room. This prolonged eye contact can signal curiosity, engagement, and a desire to connect. Conversely, if she’s constantly looking away, avoiding your gaze, or her eyes dart around nervously when you speak, it might suggest shyness or discomfort, but if it’s coupled with other positive signs, it could also be a sign of her being flustered by her own attraction. You might also notice her pupils dilating when she looks at you. This is an involuntary physiological response to attraction and interest, though it can be difficult to spot unless the lighting is just right. My own experiences have shown me that while intense eye contact is a strong indicator, it’s also important to distinguish it from someone who is simply naturally expressive or making an effort to be polite. The key is the *quality* and *frequency* of the eye contact. Does it feel intentional? Does it convey a sense of warmth or curiosity directed specifically at you?
Proximity and Touch: Bridging the Personal Space Gap
Humans naturally maintain a certain personal space, and when someone is attracted to you, they often feel comfortable (or even drawn) to bridge that gap. If a girl consistently finds reasons to be physically close to you – standing nearer than necessary, leaning in when you talk, or “accidentally” brushing against you – it can be a strong signal. This doesn’t necessarily mean she’s going to initiate a hug or a kiss right away, but it shows a desire for physical closeness. Look for subtle touches: a light touch on your arm when she laughs, a hand on your shoulder during a conversation, or even playing with her hair while she’s talking to you. These can be subconscious gestures of flirtation and comfort. Again, context is everything. If you’re in a packed bar, accidental proximity might mean less than if she goes out of her way to sit next to you on a quiet park bench. I’ve learned that these small, seemingly insignificant touches can be incredibly telling. They’re often less about deliberate flirtation and more about a subtle way to establish a physical connection, a subconscious reach for you.
Mirroring: The Unconscious Connection
Mirroring is when someone unconsciously mimics your posture, gestures, or even your speech patterns. If you notice her mirroring your body language – for instance, if you cross your legs, she later crosses hers; if you lean back, she leans back – it can indicate that she’s feeling connected to you and is subconsciously trying to create a sense of rapport and shared experience. This is a very subtle cue, often happening without either person realizing it. It’s a sign of subconscious alignment, indicating a deeper level of engagement and comfort. When trying to identify a girl likes you, look for consistent mirroring over time, not just a one-off instance.
Facing You: The Direction of Attention
When someone is engaged in a conversation or interaction, their body naturally tends to orient towards the person they are focused on. If a girl consistently faces you, even when in a group setting, it suggests her primary attention is on you. Even if her head is turned slightly, if her feet are pointed in your direction, it’s a good indicator that her focus is on you. This might seem obvious, but in a social setting, people’s bodies can often betray their true interests by directing their energy and attention.
Openness and Vulnerability in Posture
A closed-off posture – arms crossed, body turned away – can suggest disinterest or defensiveness. Conversely, an open posture, where her arms are uncrossed and her body is relaxed and facing you, signifies comfort and receptiveness. If she seems to be making herself more accessible, leaning in, or even tilting her head, these are signs of openness and an indication that she’s comfortable and engaged with you.

Verbal Cues: What She Says and How She Says It

While body language is crucial, what a girl says and the way she communicates verbally can also offer significant clues about her interest. It’s not just about the words themselves, but also the tone, the subject matter, and how she engages with you in conversation. To truly understand how to identify a girl likes you, you need to be as attentive to her words as you are to her gestures.

Asking Questions: Showing Genuine Interest in You
A girl who likes you will likely want to know more about you. She’ll ask questions that go beyond superficial small talk. She’ll inquire about your interests, your hobbies, your family, your dreams, and your opinions. This isn’t just politeness; it’s a genuine desire to understand who you are and what makes you tick. She’s investing her mental energy into learning about you, which is a strong indicator of romantic interest. Think about the types of questions she asks. Are they generic, or do they show she’s been listening and is curious about the details of your life? I’ve found that when a girl really likes someone, her questions become more personal and probing, demonstrating a deeper level of engagement.
Remembering Details: Proof She’s Paying Attention
This is a big one. If she remembers small details you’ve mentioned in previous conversations – the name of your pet, a quirky anecdote about your childhood, or a specific project you’re working on – it’s a strong sign she’s been listening intently and values what you have to say. It shows you’re not just another person she’s talking to; you’re someone she’s paying attention to. This level of recall signifies that your words have registered and are important to her. It’s a concrete way she demonstrates that she’s invested in getting to know you better.
Initiating Conversations: Reaching Out to Connect
If she’s the one who frequently initiates contact – whether it’s texting, calling, or striking up a conversation when you see each other – it’s a clear indication that she wants to connect with you. She’s not passively waiting for you to make a move; she’s actively seeking out your company. This proactive approach is a powerful signal of interest. Think about who usually sends the first text or suggests meeting up. If it’s frequently her, that’s a very positive sign.
Teasing and Playfulness: Building Rapport with Banter
Lighthearted teasing and playful banter can be a form of flirtation. If she teases you in a good-natured way, or if there’s a sense of playful back-and-forth in your conversations, it can indicate comfort and a desire to create a light, fun dynamic. This kind of playful interaction is often a way to build intimacy and test the waters. It’s her way of showing she’s comfortable enough with you to be a little cheeky and see how you respond. The key here is “good-natured.” If the teasing feels mean-spirited or makes you uncomfortable, it’s a different story altogether.
Compliments: Expressing Appreciation
While not everyone is comfortable dishing out compliments, genuine praise can be a strong indicator of attraction. If she compliments your appearance, your personality, your sense of humor, or something you’ve accomplished, it’s her way of expressing admiration and showing that she notices and appreciates you. Pay attention to *what* she compliments and *how* she delivers it. Is it sincere and specific?
Talking About Herself, but Also About “Us”: Including You in Her Narrative
If she shares personal stories, talks about her day, or opens up about her feelings, it signifies trust and a desire to share her life with you. More importantly, if she starts to use “we” or “us” when talking about future plans or hypothetical situations, it’s a significant indicator that she sees you as part of her potential future. She might say something like, “We should totally check out that new movie sometime,” or “Wouldn’t it be fun if we went to that concert?” This is a subtle but powerful way she’s signaling that she envisions a shared experience with you.
Laughter: The Sound of Connection
Genuine laughter is a great sign. If she laughs easily and frequently at your jokes (even the not-so-funny ones!) and seems genuinely amused by your company, it’s a strong indicator that she enjoys your presence and finds you engaging. Of course, some people are naturally more jovial, but a noticeable increase in her laughter when she’s around you, or laughter that seems particularly heartfelt, is something to note.
Nervousness or Flustering: A Sign of Being Affected
Sometimes, when a girl likes someone, she can get a little nervous or flustered. This might manifest as stammering, blushing, or a slight awkwardness in her demeanor. This isn’t a sign of disinterest; quite the opposite. It often means she’s feeling something significant and is a bit thrown off balance by her own emotions. It’s a sign that you have an effect on her, which is a powerful indicator of interest. It’s a vulnerability that often accompanies attraction.

Behavioral Patterns: Actions Speak Louder Than Words

Beyond individual gestures and words, observing her overall behavior and patterns when you’re around can provide a more holistic understanding of her interest. How does she act differently when you’re present compared to when you’re not? This is where you can really start to piece together the puzzle of how to identify a girl likes you.

Making Time for You: Prioritizing Your Company
If she consistently makes an effort to see you, spends time with you even when she’s busy, or rearranges her schedule to be around you, it’s a clear indication that you are a priority. This is one of the most significant behavioral indicators of interest. It shows she values your presence and is willing to invest her precious time in you. Think about how often you see each other and if she seems eager to make plans or readily accepts yours.
Seeking You Out: Proactive Engagement
Does she actively seek you out in social settings? Does she come over to talk to you, or does she seem to “bump into” you more often than by chance? This proactive behavior suggests she’s looking for opportunities to interact with you and wants to be in your company. It’s her way of making her interest known without explicitly stating it.
Showing You Off (Subtly): Introducing You to Her Circle
If she introduces you to her friends or includes you in her social circle, it’s a sign that she’s comfortable with you and perhaps even proud to be seen with you. It can indicate that she sees you as more than just an acquaintance and wants her important people to know you. This is often a step towards integrating you into her life more significantly.
Being Protective or Concerned: Showing She Cares
If she shows concern for your well-being, your safety, or your feelings, it’s a sign that she cares about you. This might manifest as asking if you got home okay, offering comfort when you’re down, or expressing worry if you’re facing a challenge. This protective instinct is often rooted in deeper feelings of affection.
Her Friends’ Behavior: The “Friend” Clues
Sometimes, her friends can be a good indicator. Do her friends smile at you knowingly, give you encouraging glances, or subtly try to create opportunities for you two to interact? If her friends seem aware of a potential attraction and are supportive of it, it’s a pretty strong hint that she’s expressed interest in you to them. This is often a reliable, albeit indirect, signal.
Availability and Responsiveness: The Digital Trail
In today’s world, digital communication is a huge part of how we interact. If she’s quick to respond to your texts or messages, engages enthusiastically in online conversations, and doesn’t leave you on read for extended periods, it’s a positive sign. Her responsiveness, especially outside of typical social interactions, can indicate a desire to maintain connection with you throughout the day. Conversely, if she takes ages to reply or her responses are brief and unengaging, it might suggest less interest, though this isn’t always a definitive rule.
Reciprocating Efforts: Matching Your Energy
If you’re making an effort to connect with her, does she reciprocate? If you ask her out, does she say yes or suggest an alternative time? If you reach out, does she reach back? This reciprocity is crucial. It shows that the interest isn’t one-sided and that she’s willing to put in effort to foster a connection. A lack of reciprocation, despite other positive signs, might indicate that her interest isn’t strong enough to warrant her own effort.

Advanced Indicators: Subtle Nuances and Deeper Connections

Once you’ve observed the more common signs, you might start noticing more nuanced indicators that point towards a deeper level of interest. These are the subtle shifts in behavior that can truly confirm how to identify a girl likes you beyond a shadow of a doubt.

Seeking Your Opinion or Advice: Valuing Your Input
If she frequently asks for your opinion on various matters, whether it’s about a decision she needs to make, a problem she’s facing, or even something as simple as what to watch on Netflix, it means she values your perspective. This isn’t just about seeking information; it’s about valuing *your* input specifically. It shows she respects your judgment and sees you as someone whose thoughts and insights are important.
“Accidental” Social Media Engagement: Little Digital Nudges
Has she been liking your older posts on social media? Or does she seem to be paying more attention to your online presence? While this can sometimes be accidental or a sign of general online browsing, a consistent pattern of her engaging with your social media content – liking, commenting, or even sharing things she thinks you’d be interested in – can be a subtle way of showing she’s thinking about you and wants to engage with you, even when you’re not physically together.
Talking About Future Plans (Even Small Ones) Involving You: Foreshadowing Possibilities
This is a more advanced stage. If she casually mentions things she’d like to do *with you* in the future, even if they are simple plans like grabbing coffee next week or attending an event a month from now, it’s a significant sign. It means she’s envisioning spending more time with you and is comfortable making tentative plans. It’s her way of planting seeds for future interactions.
Nervous Fidgeting or Grooming Behaviors: Preening for You
Similar to blushing or stammering, nervous fidgeting – playing with her hair, touching her face or neck, adjusting her clothing – can be a sign that she’s a bit self-conscious around you because she’s attracted to you. These are often subconscious attempts to manage her anxiety or to present herself in the best possible light. It’s her way of saying, “I care about how you perceive me.”
Defending You or Taking Your Side: Loyalty in Action
If you’re in a situation where you’re being criticized or questioned, and she steps in to defend you or offer a different perspective, it’s a powerful indicator of loyalty and affection. This shows she’s invested in your reputation and well-being, and she’s willing to stand up for you, which is a very strong sign of deeper feelings.
Revealing Personal Information or Vulnerabilities: Building Trust
When someone shares intimate details about their life, their past, their insecurities, or their dreams, it’s a significant act of trust. If she’s doing this with you, it means she sees you as someone safe and someone she can confide in. This level of vulnerability is often a precursor to or an indication of romantic feelings. It’s her way of letting you see the real her.

Putting It All Together: The Importance of Consistency and Combination

It bears repeating: no single sign is a definitive confirmation. The most reliable way to identify if a girl likes you is to look for a pattern of these behaviors. Are multiple signs present? Do they occur consistently over time? For example, if she makes eye contact, leans in, asks you personal questions, and remembers details about your life, these combined signals paint a much clearer picture than just one of them in isolation. My personal journey through understanding these cues has taught me that the magic is in the mosaic. You can’t pick out one tile and declare it the whole floor. You have to look at how they fit together to form the complete image of her interest.

Common Pitfalls and Misinterpretations: What to Watch Out For

It’s easy to get caught up in wishful thinking and misinterpret friendly gestures as romantic overtures. To truly understand how to identify a girl likes you, you also need to be aware of potential misinterpretations:

Friendliness vs. Flirtation: The Fine Line
Many women are naturally friendly, outgoing, and warm. A smile, a compliment, or engaging conversation can simply be signs of a pleasant personality, not necessarily romantic interest. The key difference often lies in the intensity, frequency, and the presence of other subtle cues like prolonged eye contact, mirroring, or deliberate physical proximity. If her warmth is extended to everyone she meets, it might just be her nature.
Gratitude vs. Romantic Interest: A Common Mix-up
If you’ve done something kind for her or helped her out, her appreciation and gratitude might be mistaken for romantic interest. A sincere “thank you” or a warm gesture of appreciation is often just that – appreciation. Look for signs that extend beyond the context of what you did for her.
Shyness or Introversion: Misreading Reserved Behavior
Some girls are naturally shy or introverted. Their lack of outward boldness or their quiet demeanor might be misinterpreted as disinterest. In reality, a shy girl might be intensely interested but too nervous to express it overtly. Look for subtler signs like prolonged eye contact when she thinks you’re not looking, or nervous fidgeting. Her interest might be there, just expressed in a more reserved way.
Cultural Differences and Personality Traits: The Uniqueness of Individuals
It’s important to remember that everyone is different. Cultural backgrounds, upbringing, and individual personality traits can all influence how someone expresses themselves. Some people are naturally more physically affectionate, while others are more reserved. Don’t apply a rigid checklist; instead, use these signs as a general guide and adapt your understanding to the individual.

When in Doubt, Take a Calculated Risk: The Art of Moving Forward

After careful observation and analysis, if you’re still feeling uncertain but the signs are leaning towards her being interested, sometimes the best approach is to make a subtle, low-pressure move yourself. This isn’t about grand gestures, but about testing the waters directly. A simple invitation to grab coffee, a casual suggestion to see a movie, or even just a more direct compliment can reveal a lot.

For instance, you might say, “I’ve really enjoyed talking to you. Would you be interested in grabbing a coffee sometime this week?” Her response will tell you a great deal. If she readily accepts, suggests a time, or even proposes an alternative, it’s a very positive sign. If she deflects, makes excuses, or seems hesitant without offering an alternative, it might indicate that her interest isn’t as strong as you perceived.

Frequently Asked Questions about Identifying a Girl’s Interest

How do I know if she’s just being friendly or actually likes me?

Distinguishing between friendliness and romantic interest is a common challenge, and it’s where careful observation of multiple cues becomes paramount. Think of it as a spectrum rather than a binary. A friendly person will generally be pleasant, engaging, and polite. However, a girl who likes you will likely exhibit a more intense and consistent pattern of specific behaviors that go beyond standard politeness. For example, a friendly person might make eye contact, but a girl who likes you will likely hold your gaze a little longer, perhaps with a softer expression, and seek out your gaze repeatedly. A friendly person will listen to you, but a girl who likes you will actively remember details you mention, ask follow-up questions that show she’s invested in what you’re saying, and bring up those details later in conversation. She’ll also likely make more deliberate efforts to be in your physical proximity, perhaps leaning in closer when you speak or finding excuses for light, platonic touch, which a purely friendly person might not do as consistently or intentionally. Her questions will also tend to be more personal, aiming to understand your inner world, your dreams, and your opinions, rather than just surface-level topics. Furthermore, look at the reciprocity. If you initiate contact, does she enthusiastically reciprocate? Does she initiate contact with you? Does she make an effort to spend time with you, even when she’s busy? These are behavioral indicators that move beyond simple friendliness and suggest a deeper, more personal investment. It’s the combination and intensity of these signs, applied consistently, that help you differentiate. If her warmth and engagement are directed broadly at everyone around her, it’s more likely friendliness. If these behaviors are more focused, consistent, and intensified when she’s interacting with you, it strongly suggests a romantic interest.

Why do girls sometimes act nervous or shy around someone they like?

Nervousness and shyness when a girl likes someone are actually quite common and, paradoxically, can be strong indicators of attraction. When someone is attracted to another person, there’s an element of vulnerability involved. They are opening themselves up to potential rejection, and their emotions are heightened. This can lead to a state of heightened self-awareness, where they become more conscious of their actions, their appearance, and how they are being perceived. This self-consciousness can manifest as nervousness. Her heart rate might increase, she might feel a bit flushed, or her mind might race, leading to stammering, fumbling for words, or fidgeting. These are physical and emotional responses to the heightened state of arousal and emotional investment that comes with liking someone. It’s a sign that you have a significant impact on her, enough to disrupt her usual composure. It shows she cares about your opinion of her, which is a fundamental aspect of attraction. Think of it as her “system” being a bit overloaded by the presence of someone she finds appealing. She might also be concerned about saying or doing the “wrong” thing, which further contributes to her anxiety. So, rather than dismissing nervousness as a negative sign, try to see it as a potential indicator that you’re affecting her on a deeper level.

What if she’s always on her phone when we’re together? Does that mean she’s not interested?

The presence of a phone can certainly be a distraction, and it’s a valid concern when you’re trying to gauge interest. If she’s constantly glued to her phone, appearing disengaged from your conversation and her surroundings, it can indeed be interpreted as a lack of interest. This behavior suggests that something else – perhaps social media, games, or other communications – is capturing her attention more than your interaction. This can be a sign that she doesn’t feel the need to actively engage with you at that moment, or that she’s using the phone as a shield to avoid awkwardness or disinterest. However, it’s important to consider the context. Is she waiting for an important call? Is she a frequent texter with friends? Is it a brief moment of distraction, or is it a persistent pattern throughout your entire interaction? If it’s a constant, pervasive habit that prevents any meaningful connection, it’s a strong signal of disinterest or a lack of engagement. If, however, she occasionally checks her phone but then readily returns her attention to you, asks you about your day, and maintains eye contact when you speak, then the phone usage might be more of a habit than a reflection of her feelings for you. Ideally, someone interested will make an effort to minimize distractions to focus on the person they’re with. If her phone use is consistently high and leads to a lack of connection, it’s a red flag. If she manages to be present and engaged despite occasional phone checks, then it might be less of a concern.

Are there signs that might suggest she likes me but is trying to hide it?

Yes, absolutely. Sometimes, a girl might like you but deliberately try to conceal her feelings, perhaps due to shyness, past experiences, or a desire to play it cool. Identifying these hidden signals requires even more careful observation. One of the most common signs is excessive attention mixed with attempts to play it down. For instance, she might consistently be in the same places you are, or find reasons to be in your vicinity, but then act surprised or nonchalant when you notice her. She might stare at you when she thinks you’re not looking, and quickly avert her gaze if you catch her. Her friends might also exhibit knowing glances or try to subtly steer conversations towards you. She might also engage in “negging” – lighthearted, teasing insults – as a way to mask her attraction by pretending to be unimpressed or critical. Another sign is her being overly helpful or attentive to your needs, but trying to make it seem like a casual favor. She might offer you rides, help you with tasks, or give you advice, but then dismiss it as “no big deal” or “just being a good friend.” If she consistently seeks out opportunities to be near you, listens intently when you speak, and shows a keen interest in your life, but then actively denies or downplays any romantic interest when asked, it’s a strong indication she’s trying to hide her feelings. Her actions are speaking louder than her words, and her consistent effort to be around you and engage with you, even while trying to appear indifferent, is the key indicator.

What if her friends seem to know something I don’t? How should I interpret that?

The behavior of her friends can be a significant, albeit indirect, clue when you’re trying to figure out how to identify a girl likes you. If her friends are acting in certain ways, it often means she has confided in them about her feelings. Here are some common friend behaviors to look out for:

Knowing Smiles and Glances: When you interact with her, do her friends exchange knowing smiles or furtive glances at each other, or at you? This suggests they are aware of something you might not be privy to, and are perhaps amused or supportive of the situation.
Subtle Pushing or Encouragement: They might subtly try to push you two together. This could involve asking you questions about yourself in front of her, inviting you to join their group activities when she’s present, or even making comments like, “Oh, [Her Name] was just talking about you!”
Teasing Her About You: You might overhear them teasing her when you’re around, or she might blush or get flustered when they mention your name. This is a strong indicator that she has shared her interest with them, and they are playfully acknowledging it.
Direct Communication (Rare but Possible): In some cases, a friend might even directly hint at her interest or encourage you to ask her out, acting as a sort of intermediary.

Essentially, if her friends are acting like they’re in on a secret, and that secret seems to involve you and their friend, it’s highly probable that she likes you. They are often the confidantes, and their reactions can be a reliable signal of her hidden feelings. Treat their behavior as a strong hint, but still rely on your direct observations of her own cues.

Is there a difference in how men and women show they like someone?

While there are universal signs of attraction that apply to everyone, there can be subtle differences in how men and women express interest, influenced by societal expectations, upbringing, and individual personality. Generally speaking, women may be more inclined to rely on indirect communication, subtle cues, and emotional connection. They might focus more on building rapport through conversation, showing empathy, and testing the waters with nuanced body language. They might also be more inclined to show their interest by remembering details, asking about your well-being, and seeking emotional intimacy. Men, on the other hand, are sometimes perceived as being more direct, though this isn’t always the case. They might be more prone to initiating physical touch (within acceptable boundaries), making bolder compliments, or being more overt in their pursuit. However, this is a broad generalization, and individual variation is huge. Some men are very shy and indirect, while some women are very direct and bold. The most important thing is not to pigeonhole behavior based on gender, but to observe the specific cues the individual is giving you, regardless of their gender. Your best bet is always to focus on the individual’s actions and words, rather than relying on stereotypes about how men or women “should” behave when they like someone.

Ultimately, learning how to identify a girl likes you is a journey of observation, empathy, and understanding. It’s about paying attention to the subtle language of human connection, both spoken and unspoken. By combining keen observation of body language, verbal cues, and behavioral patterns, and by being mindful of context and potential misinterpretations, you can significantly increase your confidence in assessing her interest. Remember to be patient, be genuine, and trust your instincts, but always back them up with solid evidence. The goal isn’t to become a perfect mind-reader, but to become a more perceptive and confident communicator, capable of recognizing when a connection might be ready to blossom.

How to Identify a Girl Likes You: Decoding Her Signals and Understanding Her Interest