Wanting to keep contact...yep. NPDish. As long as they see they CAN GET A RISE OUT OF YOU, they'll keep at it, cuz it makes them feel like they're winning. Beating you.
They live for
seeing their effect on people--the thrill of making people suffer and twist in the wind.
They also cultivate loyal cheerleaders with fawning and praise, often behind the scenes, which is not as thrilling as screwing with people, but necessary. ("Oh what would I do without you! You humble me! ", "Oh! So smart you are! You impress Moi!")
Practice a courteous half-smile, just for him when you see him. Try not to smirk (hard to do, if you're confident you "know something he doesn't know").
I used to sing in my head, "I've got your number, I've got your number. I can see through you.... la la la la"
They feed on fear and upset. Lean towards
confidence that you SEE clearly, and won't be fooled.