Nice girl slut

An otherwise completely normal and sweet girl who is a bit of a slut when it comes to her sexlife.

Person 1: Wow, do you know that girl Jennifer? I've heard she's dirty in the bedroom!
Person 2: Really?! But doesn't she get really good grades and volunteers at the animal shelter?
Person 1: Yeah, dude. She's a total nice girl slut.

"I want to marry a nice girl slut one day!"