Why can't I tell them?

I know that I'm pansexual and attracted to peole of the same sex. I have told a few people, basically only the few other girls I know that are also either bi, pan or lesbian. Everyone I have told accepts me and supports me. Yet for some reason I can't come out to my family or friends. My parents aren't homophobs and believe love is love. My friends are accepting of others but I'm just scared to tell them.

Even my religion has nothing against it (RC) and beleive God made me this way for a reason. I mean for God sakes my principal is a lesbian so it's not like anyone at school will make fun of me. Plus a lot of girls at my school swing down girl-girl alley. I have no idea why this is so hard.

I guess I'm just scared that it's somehow wrong, that I shouldn't be thinking this. I think my best friend knows. She tells me all the time if I ever want to tell her anything I can. Various people have asked me if I was bi. Each time I say no. it shouldn't be this diffcult. I mean I told this girl (who I sorta have a crush on , but I only see like once a week becuase ahe doesn't go to my school) that i'm pan and she was too. I had only known her for like a year. But I can't tell my best friend who I've known since I was 4.

Please any comments, words of encouragment, and/or suggestions on what to do. Please no homophobic slurs or I will send my invisable monster to tap on your sholder evry ten seconds!