"Hey, I noticed you're in your underwear. Does this mean you're propositioning me?"
Rewrite this so it doesn't sound like it was written by chatgpt and you'd have an appropriate response, for example.
Or he could put an arm around her, or lean in for a kiss, or whatever. The rest of your comment smells off. Stick to what's in the original if we're still talking about that, or else justify why what you're saying is realistic.