I think I'm hi, but I'm not sure.?

Well, I believe at such a young age, it is natural to feel uncertain about your sexual orientation. It's still in the process of evolving, so it's not a problem if toi don't know what do toi identify yourself with. There's no need to rush, these things usually work themselves out. But if toi do find both boys AND girls equally attractive, then yeah, then I'd say toi do have bisexual tendencies indeed. But I'm not an expert, this is just my own personal opinion. Hope it was helpful, at least a bit.