Confused

The other day ben broke up with Jessica and he asked me out. I said yes because he wouldn't stop asking me out. The day before I was asked out by another boy, but I said no because he's 13 and I'm almost 15. I still like the kid though and I would rather go out with him than Ben. The only problem is that I don't want to break Ben's heart and the other boy is dating. I really need some help.