Boyfriend keeping provocative photos of old hookups

I found pictures in my boyfriends email (from July 2018… we were together exclusively in a committed relationship at one year at this point) that he sent to himself and keeps in his inbox. There are only 29 items in his inbox so I accidentally stumbled upon this when going to login to my email on the computer and didn’t realize he was logged in. Some of the pictures were ones that I sent him of me before we were actually official, but I’m crushed and disgusted to see that he has saved provocative ones of other women from his past hookups. I want to confront him about this and let him know how I feel and that I don’t think this is appropriate at all. It’s disrespectful because he is obviously keeping them at easy access in his inbox so he can revisit his past and fantasize. We bought a house together in November of last year and I sacrificed everything to get this house and uproot myself and my 2 children to take our relationship to the next level so I don’t know what to do at this point. I’m afraid if I look further into his phone etc I will find more things that hurt me and I have given him 100 percent privacy as far as snooping through phone and texts (even though I am horribly insecure and always assume I will be cheated on. That’s my problem to work through, I know.) Should I let this go or confront him?