What s wrong with me? Am I bisexual??

I am a 15 year old girl, sophomore in high school. I haven t had my first kiss yet, and I have never had a boyfriend. A few guys have asked me out before, but I just wasn t interested in them. I have definitely had a lot of crushes on guys, however, so it s not like I don t find them attractive. The only thing is, my friends sometimes say things like "I would **** him soo hard" or "I would love to see him naked" and I just don t find that appealing. I don t like to think about guys ***** and stuff, in fact I think it s kinda gross. I love abs and a nice back, basically everything from the waist up, but not from the waist down. When I really like a guy, I don t necessarily want to see him naked. On the other hand, I think girls bodies are beautiful, top to bottom. I would rather see a girl completely naked than a guy completely naked, but I have never had any sort of sexual attraction to a girl. I have never had a crush on a girl, I wouldn t want to date a girl, and I don t look at girls and think "Wow, she s really hot" in the same way that I would for guys. Can someone help me? What s going on??

Thanks so much :)