So sometimes I insult girls I am fucking to test if they are crazy or not. I will say something like "You're okay, I guess", "Your makeup is smudged, you should get lessons", "I guess doing a liberal arts degree was a pretty fucking stupid idea".

If I said this to a girl who wasn't into me she would get seriously upset and call me an asshole. However, if I say it to a girl who is into me or fucking me she will look down (submit) and just take the insult without complaining. Or, she will apologize/attempt to defend herself.

What's going on here?