My ex aka total dumbass decided it would be sensible to call our nine year old son fat to his face. My DS is so upset and keeps asking me if he is. He's put on a bit of weight during lockdown, but now that he's back at school, he's slowly losing it. He's very active, we encourage healthy snacks, etc. When his dad called him fat, he decided he didn't want to see him this week or weekend. I'm fuming. I've gone off on ex, but he doesn't seem to think he's done anything wrong. So, I suppose my question is, is my nine year old DS old enough to make that decision he doesn't want to go there? We don't have a written visitation agreement and I have primary care.