It was all my own fault. We had been married for three years, back in the 1970s when free love was all around, but had passed us by and so we were both virgins when we got together. Sex was fun, but I knew, from reading Penthouse and other magazines, that we weren’t doing it right. Janice didn’t seem concerned, but she agreed to read a few articles and said she thought they were made up. We were both working, and had a fair bit of disposable income, so when VHS players came out, we bought an early model. Then on a business trip to Germany, I found some porn videos in one of their adult stores, and thought watching the action might be better than reading about it. I bought a couple of videos and put them on our bed when I unpacked back at home. Janice reacted much as when she read the articles, but at least she wasn’t angry, and I managed to persuade her to watch one of them the next evening. That was my first mistake. I had only looked at the covers, and the orgy that was displayed on the screen in great detail, with close ups of everything, was shocking. The size, how long the men lasted, the noises, up to four men on a woman, the woman on woman action, the amount of sperm showed us a type of sex we had never dreamt of. Janice put her hand on my trousers, and I came into my pants almost immediately. I put my hand in her knickers and they were soaking. She wriggled round and moved my fingers inside her. After 15 minutes or so, I came again and the session finished. The next night we watched the other video. It was on bondage, with men and women tied up in different scenarios. Janice got wet again, I came again, and we went to bed. I fucked her, but she was so hot and wet I came straight away. I could usually last for a good two minutes or more. I wondered how the people in the video managed. We didn’t discuss the videos. Life went back to normal. I felt humiliated and useless. One of my secret pleasures had always been to look at Janice’s panties when she put them in the laundry basket. Sometimes there was a slight stain from her juices, normally in the middle of her cycle. One Monday evening a couple of months later, she told me a new colleague had joined her team. I thought little of it till I saw her knickers that night. The stain was larger than usual, and still moist. I looked at her knickers more closely every night after that. She spoke of Steven often. She allowed me to fuck her as usual, but I couldn’t help but notice she was wetter than she had been. And then, exactly four weeks after she had first mentioned Steven, as I looked at her knickers in the evening and the smell of spunk hit me as I looked at the largest stain I had ever seen. I was totally shocked. When I got into bed with her, I looked at her pussy and it was red and swollen with some grazes round it. As I was trying to work out what to say, Janice just said “He took me to a hotel this afternoon, and fucked me for two hours. Now I know what a proper orgasm is, because he gave me three of them.” I asked what she wanted me to do and she said “Look after me, stay with me, learn from Steven.” She took my cock in her hand and squeezed it gently. I came and she kissed me.