I'm looking for games like Babysitter, the one where if you screw up the relation stat, the girl probably going to turn into a nympho slut and be the slave of a old rich dick or a bbc. (Western Games PLS)
Hmm, a lot of NTR related games could come close to what you are looking for. Only one comes to mind for this specific setup, though. And it's from the female prota's view, so might not be what you want, but check out Katie's Corruption
I don't even remember such an outcome in Babysitter. Might have to replay it