Relationship eh....

So today I found out my bf has been looking at escorts on backpage as well as visiting a secret sating site where you can talk to people and do "whatever" in secret ...even when married or in a relationship. Part of me is pissed but another part of me feels pathetic. Am I not that interesting that he has to look at girls and she males online in secret and be on a dating site? Not only is it disrespectful but it's just disgusting to me I dont mind the porn....some people like it some dont I dont mind it though I do not indulge anymore. I'm not okay with the dating site and the local girls that he can talk to and meet up. Idk what to do....