What I'm about to tell you isn't a fictional story; it happened in reality. Although my 25-year marriage was going smoothly, sexually, it was as cold as Siberia. My wife and I maintained only formal dialogue, for public consumption. In bed, we rarely had any kind of contact, such was the disinterest on both sides. Our sex life prior to this period was quite conventional. Although we had sex fairly frequently, we didn't engage in more daring practices. Oral sex was as conventional as it gets, and anal sex was out of the question. It was missionary sex with very few variations. Despite everything, I never imagined my wife would cheat on me. It didn't seem like her. She didn't display any traits of a fiery, sex-hungry woman.