Is it normal that hate myself over this?

I've been having a real battle with my attraction. I consider myself bisexual, but I feel weird. I've masturbated to guys and have fantasized about guys before just to get off. I really only like guys that look a certain way (Kinda like someone who likes older woman or prefers a woman of specific color) and 95% of the time thought of him having sex with a beautiful girl. I don't like all that love and serious relationship when it comes to men. I've even been finding them less attractive then normally. I've always been interested in girls though. Thought about having girlfriends before and watching more adult woman videos. I've recently obtained more of a physical attraction to girls, but whether or not my arousal is on the same level as men changes which also drives me crazy. This mourning I had a wonderful fantasy about this beautiful girl in bed with me. But as time went by it became more difficult to fantasy about her or anyone. Although I have a mood to watch girl on girl/girl on guy porn sometimes its not as satisfying. However, after talking about this from somebody else who has experienced something similar, I felt good and confident. Later that night I fantasized about actually having a emotional connection with a girlfriend. Touching, rubbing, laughing. It felt really good. Am I bisexual, I know I'm more physically attracted to guys, but I don't feel like I could say no when it came to sex or a relationship with a girl.