What to say when he calls you fat

A comment like this is rarely about your actual body. It's a probe. He's seeing if you'll stay engaged, defend yourself, or fold. Some guys do this early because they want to establish dominance. Others are just thoughtless and assume you'll laugh it off. The signal is the same: he believes he can say something unkind and you'll stick around.

Pay attention to context. If this came out of nowhere in a normal conversation, it's more intentional. If he's been rude in other ways, this is part of a pattern. Either way, you're looking at someone who doesn't have a filter for his own thoughts and doesn't care about how they land on you.

Your reply needs to do two things: show that the comment didn't work on you, and make it clear you expect better. You're not seeking his opinion on your appearance. A brief, flat response is stronger than a long one because it shows you're not rattled. Say something real but short. No need to be mean. Just be clear that rudeness isn't on the table.

Then stop there. Don't add jokes, don't soften it, don't keep the conversation alive. Let him decide if he wants to apologize or move on. What you're doing is removing the reward for insulting you. If he comes back with something nicer, you can warm up. If he doubles down or ghosts, you have your answer about what kind of person he is.

Send your reply when you're calm enough to keep it short and steady. Don't reply in anger and don't wait days. A few hours is fine. Then step back. If he responds by apologizing or at least backing off the insult, you can decide if you want to keep talking to him. People sometimes say stupid things and mean it as a joke. If he recognizes it landed badly, that's information.

If his next message is another insult, a non-apology apology, or silence, you're done. Don't send follow-ups. Don't keep the conversation going hoping he'll realize what he did. He already has.