>>937562821
>Anyway, the next 10 times we had sex I would go "UNNNNNNHHHHHH" "UNNGGGHHHHHHH" every thrust and eventually she started crying because I basically treated her request for more enthusiastic sex as a prank
Yeah, this is a form of manipulation called "malicious compliance". Outside of Borderlines and Narcissists, it's a tactic most commonly utilized by literal children. So it makes sense that your girlfriend was upset, and that she left you; You have a cluster B personality disorder.