I'd have to say maybe, maybe not. If he really did like you, he'd wave and smile every day. However, just doing it that one time may mean that he somehow got the courage to wave at you that day. If you were staring at him or something, of course he would look back at you if he noticed. This makes me think that he might like you, because if he likes you and sees you staring at him, he probably will think that you like him, and get really happy and smile and wave, like he did.
it can or he is just trying to be friendly
Yes :)
he smiles at you and he keeps coming back every day to talk to you
he might like you but i am not 100% sure
When a guy says he's crazy about you and he smiles, it means that he has fallen in love with you.
You don't.
yesm
Just because a Guy talks and smiles at you doesn't mean he likes you. Boys do it to other boys too and they're just friends.
He likes you ! :)
yes...
Yes
When a guy play hits you with a ping pong paddle and smiles, he may be acting silly because he is attracted to you.
he might have changed his mind. he might have decided he wants to tell you later. i can'tanswer 100% because boys are dumb and complicated. But i can tell you this, don't worry about it. he smiled (: