Normally

From Flying Free FB page

Normally when you tell a partner that something is upsetting you, they work on doing less of it. But with a sociopath or narcissist, they'll start doing more of it. Sociopaths learn what makes you "tick" and then experiment with how much they can get away with doing it.

You'll think you're dealing with the most emotionally dense human being on the planet. How can someone possibly do the same hurtful thing a day after you had a long discussion about how it hurts your feelings?

Right. That's not dense, it's intentional.

The more they do it, the more you react and start to doubt your own sanity. When you react, they'll typically punish you with silence so you learn to blame yourself. They will often worsen this anxiety by triangulating you with other people, so you know you're replaceable if you don't clean up your act.