I think I love my best friend who is also a girl?

i know what your going through i had the same problem once with my best friend. My advice, even if your not sure about either of your sexualities, just go for it. You don't want to regret just sitting back and not making a move when you really should have. That's exactly what i did and i've been really kicking myself for it now. I never told my best friend how i felt so we never dated and i lost her to a lot of boys before she finally decided to be engaged to one.