Ok serious question

Would you ladies stay with your SO if they were disrespectful to their parents but behind their backs? My ex got mad at his parents and called his mom a f’n cunt and I told him that if he’s going to talk about his mom that way he would probably talk about me that way when he’s mad at me. And I wanted to pick up my medicine for my kidney stone but told him it’s okay because he wanted to drink with his brother and he said I was passive aggressive and that bothered me. Then when he dropped my stuff off he said his mom could go crash into a wall and that he couldn’t care about that f’n lady. Was it wrong to not want to be with him anymore? I just feel like I would be disrespected as well