Never had a boyfriend (not proper) and now...I think i'm bi...and i think i love one of meh best friends...Cant stop asking myself though, Am i just getting that desperate? Wake up genitals! Life isnt quite over yet!
Part of growing up, I think it goes through most peoples minds, at least on a subconcious level, if not concious. Doesn't mean you're bi, then again, it could. Only way to know is to do what feels right.
Bi for girls really isn't that uncommon, nor is having love for one of your close friends (although sexual-wise, I can't say that for myself). It depends on how you feel about guys; I'm sure you find some attractive, but do you ever seek them out, or want to? I don't want to pin desperation, if a girl's really desperate, it's not hard to get some action...I would guess? I'll never know for sure, but it can't be too hard at a party or something. If you're actually concerned, talk to more guys! If you actually knew some as well as your friend, maybe you would feel for them too. It could just be a matter of not having much attachment with other people besides her, you know? If she's actually sexually attractive to you, though, you could very well be bi, and if you are don't feel ashamed or wrong about it. I mean, hell, I'm not even bi, but I'll probably hang around a more attractive guy friend over one who isn't quite so.
If you are bi.....that's cool. It's not like there's anything wrong with it. Just follow your heart and you can't go wrong. Simple.