This all happened about a year after I met Roger on my business trip to Chicago. I was still traveling most of the time but was home for a few day stretch between trips. Things at home were typical of the 19 years we had been married at the time and I tried to have sex with my wife but she acted like the concept was repulsive to her on a core level. My wife was always in excellent shape and was thin and good looking. She and I both kept at the gym daily and for the most part, ate a very healthy diet. She was probably 5'4" and 110 at the time and I was 5'10: and 170ish. She still turned me on incredibly but would tell me "nobody has sex with their husband." From the conversations with many of my married friends, I decided this was probably true and so would try but end up jacking off to porn after she would go to bed. One night we had gone out for dinner with a guy we knew well and had been divorced for the last four or five years. I considered him a good friend and fellow confidant. My wife always worked hard to look her best, she never was seen without her makeup, hair done and dressed to perfection. That night was no different and she was wearing an upper thigh length red form-fitting cocktail dress. I was not sure but I thought she might be braless as well. She looked amazing but as usual was not interested in me. During dinner she had a few glasses of wine and by the time we left the restaurant and I paid the bill she was openly flirting with our male friend. We stood outside waiting on the valet and feeling a twinge of jealousy I tried to put my arm around my wife as we waited. She gave me one of those "drop dead" looks and snarled at me. Our friend laughed saying it looked like how his wife treated him the last five years of their marriage before she ran off with one of his friends. I just laughed trying to pass it off. When our car was brought around my wife told David we would give him a ride and to get in. Back at our house my wife was now aggressively flirting and acting in a provocative way I had not seen before. I watched from the couch as my wife kissed David deeply and his hands began to roam her body. I watched him reach up under her dress hem and could tell he was touching her pussy. I tried to act indifferent but wanted to tell them to stop. As my wife's dress slowly rode up her legs and hips I could see clearly she was not wearing panties. David now clearly had his fingers inside my wife's barren pussy, touching and fingering what I had not touched in months. I was mesmerized at watching them both enjoying it and wanting to go into a rage. My wife's hands had been exploring David's body during this time as well and while she would fly into a rage if I tried to unsnap her bra she was rubbing David's crotch, letting his hands explore her most intimate of parts and all the while seeming to enjoy it. I heard David tell her "You are such a bad slut, now get on your knees and suck my dick like you were made for." I knew this was her breaking point, she did not suck dick and she did not like to be told what to do. But, instead of flying off like I knew she would I watched as my wife got on her knees and peered up at David as she took his dick inside her mouth and began to suck him like something I had only ever seen in porn. My wife who I had never known to want anything other than missionary sex under the covers proceeded to suck this man and then take his cum into her mouth. They spent the night in our bed, fucking and spooning naked together. At one point he told my wife to suck my dick while he fucked her. She protested but he told her he wanted to see it and she did it. I came fast as I had not had a blowjob in over ten years and had not had sex outside of jacking off in almost a year. As usual, my wife acted repulsed at my orgasm and made a scene showing that none of my cum had touched her. David just laughed saying it reminded him of his ex-bitch. As the two of them fucked in our bed I went out and lay on the living room sofa. I wanted to cry but could not.