Shud I be with him?Plz advice?

He says he likes me alot but the thing is he has a gf and he keeps saying he gna break up with her for me.;/ I feel bad bout this part also evry1 of his frends are major players and jus want sex so idk if he's like them cz how people say who u hang with says alot. I dnt knw if I shud move on or wait til he does break up and ask me out or if he just wants sex.?;(