So I caught my boyfriend looking at picture of his naked ex girlfriend, who still hangs out in our group of friends and is friendly with my boyfriend and I. After catching him doing that I don't want him around her anymore, am I out of line for saying that? We've been together for 3 years, and were serious. I find it insulting and disrespectful that he did this, and honestly it makes me feel like I'm not good enough for him.
He doesn't have pictures of her, she has naked "modelling" pictures online.