I'm not sure if I'm bisexual or bi-curious and I can't ask anyone yet...help?

First of all, I just want to get the language right. Your friend didn't turn bisexual, she came out bisexual. Sexuality isn't something that you turn into, or choose, it's something that's always existed in you that you might discover or explore, but it's not a sudden change or a choice.

Next, nobody, least of all people on the internet who don't know you, can tell you what your sexual orientation is. I know that might be frustrating for you, but keep in mind that we aren't you, we aren't inside your head, and we don't know how you are feeling or what you're thinking.

I do want to reassure you that it's OK to be bisexual, normal even. Sexual diversity is a natural thing, despite what some people say. It exists in animals and humans, and has for millions of years. You aren't the first person to be confused by this either. I would suggest going to speak to your school counselor, who is bound by confidentiality laws to keep your trust if you're concerned about judgment from other people.

If you're not ready to come out bisexual either because you're not sure if you are, or you're not sure how people will react, then the short answer is don't. Wait until you know yourself better and it feels right to tell others. Focus on your interests in boys if that helps you feel better. If you meet a girl that you find attractive, and if she reciprocates, go for it, see how it feels. Don't hide from your feelings. But it's no one else's business either, if you don't want it to be. Heterosexuals never have to "come out" straight. They don't carry a sign with them everywhere that says that they're straight. Coming out is supposed to empower you, help you define an identity. If it doesn't, then you don't have to do it until it does.

This probably isn't much help. I still urge you to discuss with your school counselor, who is trained in these matters.

Dont worry! Im 13 an i have a boyfriend but when i masterbate, i get really turned on by lesbian porn. i didnt know if i was bi, but i learned that its normal in teen years. evenyually youll know what you are but just relax an wait to find out what you really are. :D