What should I do?

My boyfriend and I have been together for 8 years. I caught him having a separate Instagram account specifically for naked women. I confronted him about it and I forgave him and we worked through it. I understand men look at porn.. but an Instagram account?

Fast forward to today, I caught him again but this time it’s a camgirl website. I also found out sometimes he watches when I’m in the same room.. typing this out I feel so stupid because my mind is telling me that I deserve better and should leave but my feelings are all over the place because he is so good to me it’s just this. This is the only problem but it’s so heavy. Someone just tell me my mind is correct so I can have reassurance on doing the right thing :’(