I don't want to be gay!! I can't be gay!!!?

I don't know what's wrong with me. I'm not really attracted to girls, and am attracted to certain guys, who I don't even kno, btw, but I don't want to be gay!!! If my family found out they would probably lynch me or something!!1 Please help me, I need to find out whats wrong... Why is this happening to me? I used to like girls a few years back, and now this?