we are both 15, She is my friends sister, and I usually see her every day at school, and I have seen her looking at me a lot. Since October, I would walk past her locker every day on my way to my first class, and almost every day, she would look up at me, make eye contact, and quickly look back and continue her conversation with her friend. And I had my third period class with her, and often when i would walk in, she would look at me, make eye contact, then quickly look back down at her phone. And every Wednesday and Thursday, we would have band together, (after school program,) she sits two rows in front of me, and will turn around and look at me 3 - 5 times a session, make eye contact, and quickly look away, and I know shes looking at me because no one sits in the row in front of me, I sit on the far of the aisle, and the kid beside me had a girlfriend.
But the only reason I don't know if shes in to me or not, is because she is gay. I don't know if she is bi-sexual, or full gay. I don't have any friends to talk to about this because i'm a very very shy person, and her brother is my only friend, but I don't want to tell him I like her, or talk to him about this because i'm scared he will be upset with me and not want to be my friend anymore. Can I have someones honest opinion on whether or not she likes me?