Is it normal that i've never had a crush?

I'm a 17 year old male and I honestly don't understand romance. Never did. I can't think of any instance where I've had any kind of romantic attraction towards anyone.

I'm sexually attracted to the opposite sex, but I never felt anything more than lust. I think I'm broken. It doesn't help that I come from a very dysfunctional family and I suffer from depression and anxiety, and that I've been increasingly apathetic since I was 12 years old. Maybe it was the anxiety playing tricks on me, but when I was younger I often wondered if I was gay. I'm seriously considering that I might be a Schizoid, since I do fit all of the criteria to some extent.
I dont know anything anymore.