Believe it or not, it may not be you. I know that rattles your world view, but maybe he knows you have been snooping and is embarrassed. He does not want to talk about it and does not want you to bring it up. If he ignores it then it will go away. Now on to the next thing . . . The "why am I not enough for him" thing. Woman, grow up. You are enough for him in real life and you do not want to be enough for him in his imagination. It is a sick, twisted, dungeon of perversion in there and the better it is hidden the better for humanity. You do not have the physical energy to keep up with his imagination, so just let him have it. Besides, let's say you wanted to be enough in all areas. What if you didn't WANT to do "Brazilian dog walking with a side of salad tongs"? Should he give it up (in his mind) just becasue YOU think it is sick?? Women seem to always have the idea that if they don't like it then it is not worth doing. Sometimes men like to do things that would not interest women. It does not make either of them good or bad, just different. Keep an open eye on him. It may be the beginnings of an affair, but most likely not. Most likely it is a fantasy world that the rational man that you married knows would never work in real life. But sometimes he still likes to think about it. It is just a part of the male ego (or id if you will). It does not mean he loves you any less.