What's Going on?

So lately, I've been feeling really weird, and I don't know if it's just a phase I'm going through or what. I think I'm starting to like one of my friends.... and yes, I know that wouldn't normally be a problem, but she's a girl. And today I found out that one of my best friends is gay - he finally came out. I kinda thought he was, but we joked about it all last year so I didn't really want to tell anyone... He just acted different; I guess he just didn't seem like a regular guy so much to me. That and the fact that he actually cared what his outfit looked like.... Anyways - the biggest problem is that my parents are really really strict Christians, like, about one step up from being Mennonite. The second biggest problem is that it scares me shitless. I have no freaking clue what I'm doing, and I'm scared what my friends would think. I mean, yeah, they all are perfectly fine with guys being gay, but a girl? I know one of my really close friends doesn't really like lesbians. But see, the other problem is that I might be bi. Not just straight-up gay. I've only told one person this, and I can't tell her any more because it's her that I like... And my best gay friend doesn't believe that someone can actually be bi, so I'm basically stuck with no one to talk to. Just having all of this build up until I feel like I'm going to explode. Hopefully I don't, though cuz last time was a year a cutting and crying...