My side chick recently found out she is the side piece and that I have a girlfriend. She’s cool with it except she keeps bringing up how ugly my girlfriend is. I try not to respond then she will do it in person. I just kick her out of my house. She keeps asking why I’m dating such an ugly girl and especially because I’m cheating, she doesn’t see the point. I tell her it’s none of her business.

How do I handle this? Why does she even care if we are just fucking?