It's an interesting question. Before we were married but after we had been serious for a while, I told my future wife about catching my previous girlfriend with another guy at a party (yes, I know its a cliche', but it happened.) and, the embarrassing part, how the image that was burned in my head became my primary masturbation fantasy. She was great, reassuring me that we can't help what turns us on and that any fantasy is fine. At the time, our relationship was long distance (long story how we met) and because of that, we weren't being exclusive. After my confession, she started teasing me a little about dating, implying something "may" have happened and asking me how I felt if it did. Frankly, the teasing turned me on and my reaction appalled me at the same time, but eventually when she told me she had fucked a guy I was ready for it. After that it was understood that we had permission, but it wasn't something I ever exorcised and, according to her, my future wife only rarely did. I guess we had established a cuckold relationship and it continued into our marriage. It was a couple of years after we were married I heard a rather graphic phone message left for her from someone I knew, but I had no idea they had been intimate. I was furious and when she got home from work I played the recorded message for her and tore into her about how cheating behind my back was different that cuckolding me with my knowledge. She let me run out of steam and then said, "No it's not. I don't have to tell you everyone I fuck." That was all she had to say about it and it took me a couple of weeks to sort out how I was feeling, but eventually, like the first girlfriend I had caught cheating on me, I started wondering who in our circle of acquaintances she had fucked without me knowing, and found myself thinking about her with every man we knew. When I got it sorted out in my head, I told her and she kissed me, saying, "I'm glad you did. I'm still not going to tell you, though. I mean, you don't really want me telling you how I spread my legs at least once a week for your ex-boss you hated, do you?" One thing I'll say for my ex-wife, she was a master (mistress?) of the tease.