I have absolutely no sex drive. I'm starting to think I'm asexual.

I am 21 years old and a virgin. I was a cheerleader in highschool, I have lots of friends, and I suppose I'm considered attractive by societal beauty standards. Pretty normal in every way. I have never had a serious relationship with someone because I always get bored. I have no desire to do anything with a boy, or a girl. Never masturbated, never wanted to. I'm starting to feel like I'm broken. I feel like I have ridiculously high standards but I can't help it that I'm just not attracted to anyone. Does anyone else completely lack a sex drive? I just want to be normal.