Am I lesbian?

I think I might be lesbian because I watch lesbian porn and when it's straight I watch it because of the girl, the only time I watch guys is when I'm trying to see if it turns me on too, and it does not. I've never meant to be a pervert but I have looked a few times when I was in a change room with another girl, that's embarrassing. I care more about there being a new girl in class than a new guy. I've had dreams where I was having sex with men but I didn't like them as much as the dreams I had of girls. Something that doesn't make me sure about it is that I've had a crush one a member of my favorite band for almost 4 years, I'm not pained by the truth that I can't be with him like I used to be, now I just think he's sweet, funny, cute, and sexy, and I think his family is cute, He's not one of those fake image celebrities so I know it's not just some image, I loved the bands music before I knew what the members looked like. That's the only guy I liked, the only girl I liked was a girl in my 4th grade class who was pretty and came from a big city and I pretty much stayed attached to her arm for a while but when she left I got over it because she was kinda stupid. Sorry, I know this question is embarrassing and dumb.