I’m bi..?

I’m only 16 and I guess that means I don’t have a lot of experience either way but I think I’m falling in love with my best friend. It’s wired because she tells me about her crushes and I tell her about my crushes (haven’t really told her I’m bi). I mean I think she knows but at the same time i doubt it. I haven’t told my parents either, anyone for that matter. I don’t even know if i am or not. I feel like I am but I guess I’m not completely sure to be honest. Anyway if any has some advice to help me out it would be SOOOO appreciated!!