Rap star Wiz Khalifa has vowed to stay true to his pregnant fiancee Amber Rose because he's too good for his groupies.

The Black & Yellow hitmaker admits he's so smitten with the model-turned-singer he only has eyes for Rose.

Khalifa, real name Cameron Thomaz, tells Complex magazine, "I don't look at no girls (sic). All I look at is my fiancee. I don't got no reason to look at other girls. It's weird to some people, but to us it's the right thing.

"Groupies? I don't do that. My girl said to me, 'Baby, these b**ches don't even deserve to breathe your air'. And I was like, 'You know what? You (are) right'."