We were in our early 20s and had been going on for six months or so. We had an incredible sex life -- hours at a time, more than once a day. She had these shivering, full-body orgasms that were unlike any other woman's I've ever known. She was ripe.

Then she and her friend went on a trip overseas together for a couple of weeks. When we got in bed, after she got back, we were naked, making out, and I teasingly asked her about who she'd been with on the trip. I wasn't asking seriously, but I felt her tense up. And I knew that she had been with someone. It wasn't that hard to get her to tell me the whole story, because she wanted to confess. I made her confess more than she had intended to. And I listened to the whole story, terrified.

She hadn't thought about cheating on me while on their trip, but her cousin -- who was married -- intended on picking up men the whole time. She talked my girlfriend into joining her.  She told me, as I lay there with her, nude, that she let herself be picked up by some European guy on the second night she was in town. She told me the whole operation -- how he flirted with her, how they went to his hotel room, what the sex was like. The sex was OK but not great -- she was with him for a few days, but she didn't like him that much.

A few days after that she fell in with another guy, and it was much more serious. They had a very emotional, passionate affair --  the high-intensity sexual relationship she and I had, but compressed into the space of a week. She was wistful as she spoke about him. She had been with him just the previous day. Not 24 hours earlier, she was with him as she had been with me half an hour previous. Nude, in bed, making love.

I was stunned and confused and scared as she told me these stories. Soon we were having sex, and it was some of the most mind-altering, out-of-body sex I have ever had. It was incredible. As I've grown older I have become almost addicted to adultery. I've experienced it from every side, many times, and I love every part of it. I like cheating, I like being cheated on, and I like being the man who a woman cheats for. There is nothing as erotic as adultery.