Lovers vs Players

Ok so I'm 13 and I'm the only one in my group of friends who's never had a boyfriend...but I've been asked out. Heres the problem, this boy is dating my friend and I like him(he used like me). And my other friend told me that he said if he weren't dating my friend that  he would smash w/ me bc I have cake. So I'm just confused about my feelings for him . And he's real sexy but his heart isn't in the right spot...what do I do?