I don't understand

Trisha
Every time my boyfriends mom yells at him or gets mad at him. He'll get mad and take it out on me. I don't do anything wrong. I take care of his daughter when she's here. I clean the house for him so when he gets home from work, he comes home to a clean house. The only thing I don't do is cook. And because of that, he said since I can't cook for myself, what makes him think that I can make something for his daughter to eat. All his daughter eats is corndogs, burritos and pizza rolls. I don't understand what I did wrong?