AIO boyfriend calls me dumb/stupid. It makes me really upset.

Basically what the title says. My boyfriend calls me dumb/stupid often, and last night it got me very upset. He was stating how I’m a “soft leftist LGBTQ” girl, and how he was raised with siblings who all insulted each other, I need to grow a backbone, etc. He used Red Forman as an example of someone who calls everyone a dumbass and no one gets offended. Idk, I feel kinda crazy.