Hello there! Could you kindly translate this phrase for me?

"You. You are so beautiful. My beautiful Lovino."

Romano had just asked Spain what he was staring at. XP

I want Spain to call Romano by a lover's term in Spanish at the end of the below sentence, so I was wondering if you could give me a few options? They're in an established relationship, and the scene they're in is in the middle of sex, if that helps any. XD

"What is it, _?"

Thanks so much!