I NEED HELP PLEASE!

Ok so there is this guy that I really like and I think he might have a girlfriend. He said he did but then 3 weeks later he made a move on me.... things got pretty heated but we didn't go all the way, I'm only 15 guys! Anyways idk what to think and I REALLY like him and before you judge me just keep in mind that I feel a connection.... he is also 12 and I'm 15.... WTF DO I DO???? IS THERE SOMETHING WRONG WITH ME!!!! He looks a lot older but like wtf??? I know its 3 years and when we are older it wknt matter but this boy has me fucked up. Idk if he has a girl and he is so much younger.... what do I do?