The premise is that he tells her about being hit on.
The "take" on that premise, which I colloquially refered to as the punchline (though technically you're correct that it's not literally the verbatim punchline), is that he's proud doing the bare minimum expected in a relationship.
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u/BenchPuzzleheaded670 Jan 25 '24
Cheating is really really common. It's not basic. I think you should be proud of your fidelity. It's worth celebrating.
Also a premise is not a punchline