Like

I like this guy and I dont if he likes me back so how can you tell if someone likes u

Ask him. If you don't, you'll never know.

:-)

or ask his friends

I'm not much of a love guru myself but I do no the signs guys give... if he looks at you then great, he nos you exsist, if he talks bout random stuff when your round then thats good too, he's nervous... this sounds all too movie buff but I can tell you if you have that feeling he is rite 4 you then you can go 4 it and see what will happen