Is he interested or not ?

So there's this guy I really like he's really cute but he's really hard to read like he won't talk to me when he's around his freinds but wen where in class it seems like he can't get enough of me he talk to me and it seems like he can't keep his hands to himself but as soon as the bell rings he's off ? He's got me confused ? Oh and we have kissed once but he has never mentioned it again ?