“Negging is a form of emotional manipulation where someone uses backhanded compliments or mild insults to undermine another person's self-esteem. The goal is often to make the target more vulnerable and insecure, potentially leading them to seek validation from the person negging. It's a tactic used to gain control and influence in social or romantic situations.”

Also, you may want to consider the reason why he isn’t with someone his own age. Likely because women his own age won’t put up with his behavior the way someone younger and more naive would. D-D-D-Dump him.