When was the moment you realized you were being used?

Hm...the last time I can remember really being used was when I was sexually harassed twice at 14. Since then I hated cis men and didn’t let them use me. I say hated because I don’t hate them now just dislike them. My most recent ex girlfriend was a manipulative asshole, but she wasn’t using me.... I don’t know what the fuck her problem was; I really don’t. She was so fucked in the head. She should really be in a psychiatric hospital.