Need help/advice: found pics on boyfriend's computer

so I was completely in the wrong here by doing this, but I go kind of drunk and stoned last night and started looking through my boyfriends pictures.I found five or so nude and dick pics he had taken. But, I never saw or received these photos.It would be one thing if sending pics was the norm for us, but in our two years of dating, we have never exchanged explicit pictures. So this seems really random and out of character.Also, he is adamantly a top, and these photos were very gratuitous ass shots. He rarely even lets me look at his ass or play with it.So, I feel crazy boyfriend but what's done is done and now I am upset and don't know what to do. The relationship has been wonderful and loving.Should I just trust him, and assume the photos were meant for me or he was just feeling himself and took some one night, or should I confront him about this, and the pics possibly being sent to someone else.Please help -- I don't know where else to go with this.