So I am dming a group of a my friends in a game of Dungeons and Dragons and I recently discovered that one of the players lets call him M went over to another player’s apartment we’ll call her C and had a threesome with her roommate. While this isn’t a problem they did it on C’s bed while she was out of town so they could blame the noise on her, and according to the other guy they didn’t even wash her sheets after this.

After I found this out, I asked C if she wanted me to remove M from the game. She said yes and I obliged. 

AITA for asking this question or was it justified?