There are numerous signs that guys give while they flirt with you.
Some pertain to their body language, some to the eye contact they make, some about their way of talking, etc.
But I recommend you to read this guide called "The Fastest Guide to Flirting".
Specifically for your answer, visit this page below in the guide
http://blogjeez.blogspot.com/2011/02/signs-of-flirting-in-guys.html
1) He walks by you more than usual
2) He glances at you a lot
3) He starts talking to either you or your friends
4) He starts hanging out near you and your friends
5) He may look you up and down every once in a while
6) You may start hearing rumors about you if he is popular
7) This is unlikely, but he may either ask you out to the dance, or on a date.
You will know if a guy likes you, or if he is just plain desperate. Trust your gut feeling. One way to tell if he is desperate, is that he will ask you out in class. I say this from experience. I hope this has helped you!
At 12 years old, he makes fun of you and plays tricks on you. At 15 he's afraid of you and avoids you. At 18, he tries to seduce you like the horny dog that he is. At twenty something he starts transitioning into the man that wants to impress you with his ability to provide and satisfy. After that comes phase two, but your too young to worry about that yet. Just watch out for the ages between 16 and before twenty something for now.
he will flirt with you and give you signs that he likes you .. :D
If he shows signs as smiling winking and tries to make physical touching and complementing then you can tell he likes you.
There are many possible signs that a guy likes you back more than as just friends. One easy way to find out is to simply ask him.
A guy's real intentions can be difficult to tell,
You can tell when a shy guy likes by observing a few signs. If he likes being around you, laughs at your jokes, compliments you, and does nice things for you, this may mean he really likes you.
Look for signs. Like maybe if he makes you laugh alot. Or maybe he looks or stares at you.
What_are_the_signs_that_a_guy_likes_you_back
Looks at you a lot
Some signs of attraction are wanting to hang out, touching, flirting, but the only 100% effective way to tell is to be honest and ask.
The way that I can tell that a guy likes me is by his actions. Does he do nice things for you that you do not see him doing for other females? If so then most likely this guy may like you. Another way that I have been able to tell if a guy likes me is if they constantly keeps contact with me. Meaning that everyday you can expect this guy to contact you rather it's through a text message or a phone call or even myspace or facebook. In saying that there are also times when a guy will not give off any signs to show you that he may like you. In that case you can just ask him does he like you.
Well has he given you any signs of you thinking he likes you?
he would be constantly looking at you