When I was your age, I had an extremely hard time figuring out my sexual orientation. I was in the same boat as you, I think. When I saw an attractive male, I felt something, but I had no interest in pursuing a sexual relationship with a man. I found women to be easier, and even fell in love with my best friend, a fellow Aspie. I thought for a long time I was meant to be a boy, but as I got older, I became more comfortable in my body and myself.
We're still together, but, funnily enough, we both identify as asexual. You're young, and I know it may seem like a huge deal right now, but as you get older, you learn more about yourself, and what you want and need and what is a temporary fancy, and what is more permanent.
Getting to know yourself as you age will clear some things up for you, I think. The next few years will help you decide.