Chris wrote:Her: "Does this make me look fat?"
Let me first quote an obligatory cliché: "It's a trap!"
Now as to the proper course of action, maybe first you sigh but then you better find a way to avoid answering that question because there is no good answer to it.
You: Yes, baby, it makes you look fat.
Her: You're saying I am fat! Bastard!
You: No, baby, it does not make you look fat.
You: I don't have an opinion.
Her: You no longer look at me like you used to. You don't find me desirable anymore.
Pray for an opportune diversion. Absent a diversion, be prepared to simulate a stroke because there's no way you can answer correctly.