You can usually tell from the way he looks at you and does certain things to make you laugh, or he will try to find ways to talk to you. Dont ever just assume he likes you if he does those things, if you pay close attention he might be like that with everybody but there is a 80 % chance he likes you if he does those things.
Also look carefully or listen carefully to what he is saying to you.
If a guy's talking to you on the phone, then he likes you. Period.
If he shows signs as smiling winking and tries to make physical touching and complementing then you can tell he likes you.
Ask him out and see how it goes.
YES, eye contact and smiles are the tell all on whether or not a guy likes you.
The only way you can find out whether a girl is of a certain sexuality is if you directly ask them yourself.
if he hits on you
if he likes you for who you are
you can get a guy to tell you if he likes you by just being yourself or just coming out and asking him, "hey do you like me?" what do you have to loose?
if a guy likes you but you dont like him, tell him your not in to him and say sorry.
if a guy likes ur friend he will flirt with her and not u.
If a guy likes you he will turn around and look in your eyes.
I will tell him to stop,or i will like him back