I was attending a lengthy cocktail party at the mansion of a wealthy business acquaintance when I noticed my very recently divorced ex-wife with the lover who was the cause of our split up. In the ensuing six months since our divorce, I had heard they had become a couple. When our eyes met, she gave me a long look that ended with her look turning sultry, the one that had always preceded us having hot sex. I circulated around the room, but whenever I looked her way, she gave me that sultry look. I wondered what was up. A few minutes later, I found her at my side without him. I turned toward her and she leaned in with a drink in her hand as if to make polite conversation, then said in a low voice, "Want to get laid?" I almost spilled my own drink with astonishment and said, "Really! What do you mean?" She leaned in again and said, "I mean, do you want to get laid - by me?" Still very much surprised, I replied, "What's going on with you?" "I'm horny and you're the only other man in the room I feel comfortable asking for a quickie. Plus, you know exactly how to fuck me and I need some right now." "What about your 'friend'?," I asked. Getting a bit annoyed, she asked, "Do you want some or not?" By now, my cock was rising inside my trousers at the memory of having hot sex with her for all those years. When I nodded a 'yes', she said, "I'll go upstairs to the last bedroom on the right. Follow me in two minutes." That was the longest two minutes I'd ever experienced. She had left the door cracked a bit and I quickly entered and locked it behind me. She was standing by the bed and, as I approached, she said, "We haven't much time. Take off your suit jacket." I complied and then walked into her arms. She hungrily kissed me with lots of tongue, which we both love. As we kissed, I felt her lift up the hem of her sheath dress and then grab my hand, pushing it between her legs. She had removed her tights and panties and my fingers slipped directly into her lightly haired groin. I felt the wetness in her slit, then slipped a couple of fingers into her pussy, finding it already wet and slippery with arousal. I rummaged around a bit as her hips bucked against my hand. She resumed our passionate kissing fingered her and felt her lust rising quickly. By now, I was totally into stealing a fuck from my ex-wife. The thought of having her while her 'friend' was downstairs unaware exhilarated me and my cock got rock hard. I soon felt her hand caress my cock through my trousers with some urgency and I quickly said, "On the bed. Now!" She pulled her dress up around her waist and lay back on the bed with legs spread and knees raised, looking lustfully at me as I knelt between and pushed my trousers and boxers down to my ankles. It was like we were teenagers sneaking a quick fuck while fully clothed, something I hadn't done in decades. My lust for her, remembering how we used to fuck like bunnies in the early days, took control and I mounted her with a violent thrust that took me straight up her in a single stroke. 'My God!', I thought, it felt fabulous to be inside her once again, especially when she immediately started to fuck me back, thrusting her hips up into me as she wrapped her arms around my upper back and moaned, "Fuck me. Fuck me hard like you used to!" I thrust into her rapidly and deeply, trying in my lust to drive my cock through her. I knew I wouldn't last long, so I concentrated on bringing her with me as I rapidly approached my climax. My memory of her violent climaxes beneath me was etched on my brain and I wanted to feel that once again. She was straining for hers also and miraculously we climaxed together after just a couple minutes of deep hard fucking. I came in her with spurts of hot cum as she thrashed out her orgasm, her body bucking under me. My climax was so intense, I continued fucking into her to prolong it. When finally finished, I collapsed on her. She hugged me tightly with her legs now wrapped around my waist and her hips still thrusting slowly as she recovered. When her body finally stilled, she whispered into my ear, "God, I needed that! I've missed how you fuck me." I raised my head, looked into her face, and said, "Then why did you fuck him in our bed, knowing I would discover you, and then ask for the divorce so quickly?" She replied, "We need to clean up and get back downstairs. Meet me for lunch tomorrow and we can talk about it." I agreed and we quickly returned to the party, with me still a bit bewildered by this turn of events. The next day we had lunch at a secluded table in my favorite restaurant near both my office and my flat. In answer to my question the night before, she tried to explain, "I wanted what the French call 'une grande affaire' as a way of rejuvenating our married sex life, not that you were lacking in any way, but we had gone stale in bed after 26 years. I had the idea that you would discover us, become aroused at what you saw, and join us, fucking me wildly and taking turns in me with him. But you became uncontrollably jealous and felt so betrayed you were beyond reason. I now know I should have just told you that I wanted to try a threesome within our marriage and trusted you to understand and agree. Also, his flirting and pursuit of me was wildly exciting and I succumbed to the passion of the moment." I listened and understood, then asked, "So, why last night?" She looked a bit sheepish as she replied, "The thought of being unfaithful to him, especially with you, just took hold of me and I became incredibly horny when I saw you. All I could think about was getting you upstairs to fuck me while he was unaware downstairs." I shook my head in wonderment at the logic of women and asked, "So, what now? Do you want us to get back together?" She thought for a few moments, then said, "I really don't know. I'm not in love with him, but he's good company and good in bed, and takes me to all those social functions you hated so much, so I'm comfortable with living with him. But I think I want to have a continuing fling with you." By now I saw which way the wind was blowing and I replied, "You know I'm in a relationship with someone?" She said, "Yes, and she's very good looking. Are you living together?" "No," I replied, "It took me these many months to get over my hurt and I won't put myself through that again, so we each have our own place, but we are together several nights during the week and on weekends." As I told her that, I suddenly realized the thought of having a continuing fling with my ex-wife was making me horny. She smiled in that way when she starts to get sexually aroused and said, "I think I want my cake and eat it. I know from last night, I like the thrill of being unfaithful, and the thought of having you as my lover is exciting." My cock started to get hard at the thought of having her again, and I said, "I don't want to over think this. Let's just see where it leads, but right now, let's get out of here. My flat is only two blocks away." She grinned broadly and we left. When we got to mine, we slowly undressed each other as we kissed, savoring the removal of each garment and taking our time arousing each other. By the time we were naked, our fingers had explored all of our intimate parts. My cock was rampant and her pussy was sopping wet in anticipation. She got on the bed on her back and I entered her. We fucked slowly at first, fully enjoying the exquisite feel of my hardness surrounded by her wet warmth. When the lust fully kicked in, we fucked violently to a long mutual climax. Whoever said that sex is not loving, but is intense, urgent, sweaty, violent, and not for polite company was so right. By the time we came, we were rutting animals - and we reveled in it, fucking each other wildly. After recovering for a while, she climbed on top, straddled my hips, and slowly impaled herself fully on my rejuvenated cock. I was enthralled to cup her heaving breasts and squeeze her hard nipples between my fingers as she fucked my from a straight up position. As we fucked, I enjoyed watching the grimaces of ecstasy on her face as she rolled her hips, straining for the ultimate release. I assisted by thrusting my cock up into her and was rewarded when she literally screamed out her climax as her orgasm rolled over her. The uncontrolled bucking of her hips almost sucked my come out of me, but I held back, wanting her on my own terms. She collapsed her upper body on me and panted while she regained her breath. When her body finally stilled, I rolled us over, knelt behind her as I raised her hips, and entered her from the rear. She pulled a bed pillow under her and lowered her chest onto it. This pushed her hips and bum up in the air. I grasped her hips with both hands and pulled her into me as I thrust my cock forward. This one was all for me, and I thrust repeatedly hard and deep into her. I felt her pussy squeezing my cock and nipping it in her passion. I became more and more aroused, especially when she started to whimper beneath me, "Oh, my God! Take me! Fuck me hard!" By now, I was pounding into her, then, as I felt my cum rising, I hammered her unmercifully until I catapulted over the edge of the chasm and, with a roar, spurted my hot cum deep inside. I continued fucking her as my passion slowly subsided, finally collapsing onto her back as she dropped her body onto the mattress. When we recovered, we cuddled facing each other with arms and legs entwined, thoroughly enjoying an extended post-orgasmic glow. We stayed together the rest of the day, then went out to dinner that night like we were on a date. Over the next two years to the present, we each slowly untangled ourselves from our then current respective relationships, secretly meeting and being unfaithful to them with each other. We knew it was unfair to them , but we couldn't help ourselves. Since the time we each finally broke away from those relationships, we have 'dated' exclusively with each other. We live in separate flats, but are together in one or the other on weekends and during most other nights. We probably won't remarry as we agree with each other that might dull the excitement of our 'dating'. Not being legally bound to each adds a certain 'edge' to our relationship that neither of us wants to forego.