Video games

Hi ladies. So before I get started I just want to say that my fiancé has a problem with porn. Well long story short he wants to play a video game where all the women aren’t wearing bras and the main character in the game which he’ll be playing has sex with all these women. I’m not sure if I’m making a big deal out of this but I don’t feel comfortable with him playing this game. He says it’s just a game but it’s more of an issue with me and how much porn has hurt our relationship. Am I being selfish? Or am I being rational?