MAYBE gay awakening

Okay. I'm really embarrassed to even just THINK about this but I don't know. I have this BESTFRIEND, her name is emely. I've always known who she was but we started getting closer last semester. we got even more closer now that school had started, and I sometimes find myself like, fixated on her, and following her everywhere she goes when we're together. for some reason, I'm always thinking about her. I'm into guys, I am, but I don't know if this could be a sign of something?? please help me figure out if I'm just a nice person or I might actually like my best friend.