I F25 searched through my boyfriends browser history M25

Okay so I , 25F went through my 25M boyfriends search browser yesterday and found he favorited a explicit video. He always lets me use his iPad and I favorited a site and searched through it and saw that he liked a sexmex video. At first I was upset by it but then I wasn’t and for some reason turned me on. When I’m having alone time I fantasize my boyfriend with other women and i get so turned on by it however don’t think I can be willing to do something like that in real life. Yesterday when I saw the video I thought of the female that my boyfriend favorited and used it for my alone time. I never done that before and I don’t know if that’s even a normal thing. I don’t know if I should tell him about it or just brush it off and carry on with my relationship. Watching explicit videos is something we both said we don’t do but I’m guilty of it so I can’t be mad at that. Has anyone experienced something like this ? (Btw we have been together for 6 years)