Man, @Natkat, that sucks! And trauma is defined to be "a deeply distressing or disturbing experience.," so it sounds like that counts.
@Vega, I don't see why something else making you aromantic would make you any less aromantic. We don't know why orientations are in the first place! It doesn't matter why you feel this way, just that you do.
Doesn't have to be very abusive, in my experience.