Verified answer

It's hard to know how to respond because it's a mixed message. Ewwww is used to express disgust or distaste, and gorgeous is usually a compliment, but when combined it might be a sarcastic insult. There is no cute-sounding thing you can say, so I would ignore it completely, or just say "Anyways..." and change the subject. If they continue with insults, shut down the conversation.

I'd say,

"My gorgeous what? I didn't realise that 'your' had become an acceptable substitute for 'you're'."