Not really cute per say, but i called my ex 'my northern star'. she was typical Hibernian in her looks and stature.
Warrior princess. I pity anyone who messes with her.
We usually call each other babe or baby, but sometimes he calls me sugar britches and I will call him my sweetie
Boobie? lol i've really never been one to come up with little nick names, kinda feel like it can be obnoxious
Princess, Gorgeous, or Angel.