1.Examine his body language
☛He looks at you a lot. His eyebrow may even lift as he watches you ("the eyebrow flash" that lasts a fifth of a second). He might not even be really conscious he is watching you as much as he is.
☛Notice how much he looks at your face and makes eye contact.
☛He leans towards you a lot. Personal space invasion is a sign of major interest.
☛Check the direction of his hands, feet, legs, toes, etc. If they're pointed toward you, it's a subconscious indicator of his interest in you.
☛He starts grooming himself. He pulls at his tie to straighten it or he readjusts the fit of his sweater. Perhaps he runs his hands through his hair in attempt to tidy it or he reaches down to tie his shoelaces. Doing this repeatedly is similar to the actions of a male bird preening up his feathers for a display!
☛Check out how he's sitting. If you see rather manly gestures, such as sitting with open legs or placing his hands on his hips, he's trying to impress.
☛If he likes you, you may see that he rarely turns his back to you, often leans towards you, and also looks at you a lot. If he slouches his shoulders when near you, he's romantic and cares about what you have to say. If he points his shoulders and pelvis towards you while sitting, he is definitely feeling something for you.
2.Notice his eye contact.
☛A gaze that has him looking left, then sweeping over your face, then looking right is a sign he's very attracted to you.
☛Be careful not to confuse a shy guy's darting retreat from eye contact with a guy who is clearly disinterested. A shy guy who is interested will continue to steal glances at you. Be patient!
☛If you don't like the guy, it can be uncomfortable to maintain eye contact; break it off quickly and scan the room yourself, as if looking for someone else.
☛When he's around you and he says or does something funny and everyone around laughs, his eyes will flicker towards you for a second to see if you laughed too––this means he's keen to make a good impression on you.
☛His pupils may dilate if he likes you, but this is quite hard to pick up on, and you might come across as acting strangely by looking that closely into his eyes. If you're around him for a long time, it could be easier to pick up on gradually.
3.Listen to what he's saying
☛Gauge his interest in what you have to say. It really doesn't matter what you say, it's how you say it that can tell you a lot about his level of interest. So, try this: Lean in and whisper, with your shoulder barely touching his and say something softly. To heighten the impact, steady yourself gently by brushing your arm across his back. If he moves his head closer toward you and either touches you back or maintains eye contact, he's interested in you. If he isn't interested, he'll probably step back or be very unresponsive. A really disinterested guy might even try to shoo you out of his personal space!
4.Notice his interest in touching and being touched.
☛If he is a shy guy, he may jump a little because he wasn't prepared for you to touch him. That doesn't necessarily mean that he doesn't like you, watch his actions carefully afterwards.
☛Obviously, playboy guys (bad boys) might be very keen to spread their touching gestures around; be sure that he has more substance than this by observing how he interacts with other women in your group.
☛See if he uses any of the tricks in How to touch a girl, and see if he uses them more with you than with anyone else.
5.Watch his actions to see if he treats you differently from the rest of your group.
☛Be aware that some guys flirt with other girls to get your attention. It gives him a chance to see your reaction, and helps him know if you really do like him or not. (Yes, it's an odd sort of logic, especially since you might end up so offended or confused that you just give up on him!) However, you can usually spot a "get-your-attention" flirt if, in the middle of his flirting scenario, he keeps taking the chance to look at you, seeking out your response. You can also try a quick trip to the bathroom and find yourself a sneaky observation point to check out how the flirting is proceeding. If he stops the moment you've left, it's you he's serious about, not her. Alternatively, ask a friend to do some observing for you while you're away.
6.Watch for him showing a sudden, previously unexpressed interest in things that you like and do.
7.Check for signs of nervousness.
8.Pay attention to his friends.
☛Be careful if a friend of his makes suggestions that a guy likes you but all of the other indications tell you otherwise. Sometimes friends have reasons of their own for ensuring that any chances of you getting together are ruined, including catapulting you into making a fool of yourself.
9.Look to see if he imitates you.
☛Following you can be another sign; for example, if you buy lunch and sit at a table and he edges as near to, or even on the same, table as you, he is probably trying to get closer to you. Just be sure you're not confusing this action with there being a lack of space to sit anywhere else!
10.Pay attention to gentle, friendly teasing.
11.If he hits you or playfully punches you on your arm, this may mean he likes you.
☛Play punching can send mixed signals. It could mean "I treat you like one of the boys" and signal friendzone antics only. Check out whether he does this to other girls in your mutual group. Moreover, if he continues to think that play punching you is a fun way to hang out, you might be dealing with someone who is never going to get past this immature display of affection; don't let it go on indefinitely.
☛If you don't like it, say so immediately. You are entitled to ask someone not to harm you, even if the gesture is well intentioned.
12.Acknowledge any compliments that come your way.
☛Note: If this guy is a good friend of yours, compliments won't necessarily be indicators of romantic interest. It could just be him being a truly good friend.
☛Not all guys are this straightforward about compliments, so don't be worried if he doesn't compliment you.
13.Watch for him noticing 'masculine things' on you.
14.If he chats to you often on a social networking site, it may mean that he likes you.
☛If he puts an 'x' sign on the end of everything he says to you, don't assume it means he likes you. It could just mean that he perceives you both as good friends or that he's just used to ending his chats that way.
☛If he says, "I know something you don't know," then this could mean that he likes you and is playing a little guessing game. Or it could just mean he's doing the usual social media thing of spreading information for fun, like the discovery of a new planet or finding the cure to cancer, etc. Use the context to judge the import of any such online personal game playing.
15.Watch to see if he has suddenly developed a habit of turning up where you happen to be.
16.Be receptive to his signals.