I feel like I don't even know myself right now....?

[First]

First off let me say I feel like this will sound confusing, sorry. And 2nd I'm a girl.

Okay- so, I was really close friends with this one girl, when we were friends I felt something a little more than that, not much though. But now, she hates me....or so that's what it feels like/seems like. Now I miss her so much it hurts. I asked someone on DM on Twitter about it (she's a lesbian so I felt like she would understand) she said it sounds like I really did have real feelings for her...I feel like I did actually...I can't stop thinking about her at all. I've never felt this way about another girl before...I guess I just feel really confused about my sexuality?

Thanks to anyone who answers...