sulk about (someone or something)
To have a brooding, sullenly aloof, silently resentful attitude or demeanor because of someone or something. A: "What's wrong with Jim?" B: "Oh, he's still sulking about being passed over for the promotion." You can't spend your whole life sulking about your husband. It's time to move on!
sulk about someone or something
and sulk over someone or somethingto pout or be sullen about someone or something. What are you sulking about now? There is no need to sulk over Mary.