Asexual. That's the word. You've never liked it--you don't like labels. They're restrictive. Give a false impression. Asexual: someone who doesn't experience sexual desire. As you search around, it becomes obvious asexuality is a little more complicated than that. Asexuals can still masturbate, or even have sex. You don't understand. For you, it's very black and white. You don't have sex; you don't feel much of anything that way. It's fine. It's all fine, you've been told.
It didn't matter until you got a boyfriend.