fallen for my bestfriend?

Me and this girl (and yes I'm a girl too) met at the beggining of the summer when she moved in with me. Over that period me and her went from strangers to bffs. At the beggining of the summer I never experienced feelings for girls. I've never really felt like this for anyone. But anyways she flirted all the time before she knew me but she was usually a little tipsy. As we grew together everyone always thought we were together cause of how we acted. Closer and closer everyday and we have SO many memories. After summer she moved about an hour away and now we don't Rly see each other just text and snap chat 24/7 I'm completely in love with her and idk if she is. She always goes along with my flirting but idk. Help