We're in our late 40s now and had been best friends for 15 years with Tim and Marie when they lived next door to us, then they moved away when he got transferred by his work about six years ago. After that, they would visit every three months when he had his weeklong quarterly meeting in our area. Marie would come with him the Saturday before and they would stay with us for the week and not go back until the Sunday after. The girls loved being together during the week when Tim and I were at work. It was great and we all got on very well. In fact, Tim and my wife became close and always laughing at each other's not very funny jokes and mildly flirting. Marie and I even said if we were out of the picture, the two of them would get together. In a playful mood, I once asked my wife if she fancied Tim and she joked that if I was not around she would be in his bed in a flash, but I wasn't too sure it wasn't true. Then, three years ago, Marie tragically died in a road accident. Tim was devastated for the first year and wouldn't even stay with us when he came down for his meetings. About two years ago he started staying with us again, but was not moving on with his personal life, not even dating. It was sad to see the hollow shell where there was once a vibrant man. On his visit about a year ago, nothing was different and I half joked with my wife in bed one night during it that he just needed to get laid and maybe she should put him out of his misery. She got a funny look on her face, then asked if I was serious. I was taken aback for a few moments as an instant image of her with Tim between her legs took hold and my cock started to rise. I imagined him humping her, she with her arms and legs wrapped around his body until she screamed out a come. That whole sequence didn't take me ten seconds to image, but at the end my cock was rock hard and I felt a tightness in y groin. I asked if she was interested. The look on her face gave me my answer and she just asked, "When?" I said, "Why not now? He's right in the next door in the spare room - probably wanking. But I want you first." She chuckled aa she said, "Yeah, I can feel it sticking into my thigh." She opened her legs as I climbed between and slid into her. Her pussy was already wet telling me that her arousal from the idea was as rapid as mine. I was so horny I fucked her hard and fast imagining it was them and came quickly. I rolled off as she wiped the cum dribbling out of her pussy with some tissues. She pulled her short nightgown down as she got up and headed for the door. I asked her to leave his bedroom door open so I could hear and maybe look in. She left our bedroom door open and I heard her open his door. I stood just outside his door and listened to the following exchange between the. "What are doing here?" She answered a low voice, but loud enough for me to hear, "He went to sleep without our usual cuddle and romp. He's been doing that a lot lately. Can I cuddle with you?" He stammered a bit as he said, "I don't know. We shouldn't. It's not right, he's my friend." She replied, "What about all that flirting and hugging we used to do? I thought you were hot for me all these years. Was I wrong?" He quickly replied, "No, no. I've always been hot for you, but he's right next door. What if he wakes up?" "Not likely," she said, "once he's asleep he's out for hours. I'll just lie next to you while you decide." I heard her get on next to him and say, "Give me a little kiss." Hearing them talk made me horny again. With my cock again fully erect, I leaned my head around and peeked in. It was very dark inside but I could make out her lying next to him with her upper body hovering over his chest. They were kissing and his hands were rubbing up and down her back. The kiss deepened and his hands roam over her bum, kneading it with passion. He pushed the back of her nightgown up and slid one hand between her bum cheeks to get to her pussy from the rear. She bent one leg over his to open herself to his fingers and they disappeared between her cheeks. His hand began moving faster and faster, and she soon moaned, "That feels good. Do you like the way I feel?" With a strained voice he replied, "Oh, God, yes. You feel wonderful and you're already sopping wet. I can't wait. I want you now." She raised up and pulled her nightgown off, then helped him fling the bedcovers back. He quickly got rid of his underwear and she lay back down next to him on her back. He leaned over and they kissed. She wrapped her arms around his neck and he fingered her. She thrust her hips up in time with his fingering and moaned, then opened her legs as wide as they would go and urged him between them, saying, "Fuck me. Fuck me now!" He mounted her, sliding in with a single thrust and, with the urgency of a man not having had any pussy for a couple of years, fucked her hard and fast. She wrapped her arms and legs around him and held on as he pounded into her. In no time at all, he began grunting, his hips a flurry of movement, then came with a growl, pumping his cum into her for several seconds. She hung on to him tightly until he was finished and his hips stilled. He apologized several times for not lasting long enough for her to come, but she told him she understood. When he tried to withdraw, she told him to stay inside as he would soon get hard again. They cuddled like that, with him on top and between her legs. He told her how long he had wanted her like that. She agreed and told him how much she liked feeling his cock up her. These love words continued until he started thrusting into her again. This time it was a lengthy episode with lots of moaning and groaning and panting, ending with both of them coming with gasps and grunts of extreme pleasure. By then I was slowly wanking myself enough to take the edge off, but not so much that I came since I wanted to come in her when I would have her when she returned to our bed. They continued for at least another half hour with her on top and then 'doggy' with her on her hands and knees. She was so aroused, she came both times, finally collapsing in a heap after he drilled her from behind and shot another load of cum up her. When she collapsed, he hugged her and fingered her sloppy pussy, commenting on how much cum was still up her. When she recovered, he wanted her to stay, but she told him she better get back to me. He asked if it was only a one off or could he have her again. She gave him a long and passionate kiss and said, "Oh, we'll definitely be doing this again. I'll work out something." She came back to me after closing both bedroom doors in turn. She cuddled into me and kissed me deeply as she stroked my hard cock. After wanking it a few times, she just rolled onto her back and opened her legs, knowing I would need to fuck her. I was so horny, I did her hard and fast, just like before she went to him. I had to muffle my outcry when I came, and we had to whisper our conversation afterward. I said more than asked her, "You want him again, don't you?" She sighed passionately and almost moaned, "Oh, yeah! He not any bigger than you, but it feels so different, it turns me on incredibly. Please don't be hurt or angry, but I'm going to want him lots." I told her it was no problem so long as I could listen and watch, the latter preferably in the open so I could have her in front of him at some point in the session. She agreed and said she thought the best way to arrange it would be simply for me to tell him how it would be since, as she said, "He'd be a fool to turn down free pussy for a matter of principle. And she was correct. When they returned the next afternoon from work and we had come back from dinner at the pub, she sat with him on the sofa in our lounge and I simply told him he could have her so long as I could watch and then have her myself in front of him. After the surprise wore off, he readily agreed and she seduced him right there on the sofa as I turned the lights down low. I got naked as they went at it with her on her back. She came after a long and passionate fuck, then she lowered herself onto his cock when he lay on the carpet and fucked him to another of her passionate climaxes. He then flipped her over and drilled her from the rear and coming again. I got sloppy thirds when I then fucked her 'doggy' style and had a loud come. When I pulled out, I held her hips up with my hands and he and I both watched as our combined cum dribbled out of her wide open pussy and drip onto the carpet as well as run down the inside of her thighs. Her groin was also awash in cum. When I lowered her hips to the carpet, she rolled onto her back, opened her legs wide, and ran her hand all around her groin until it was soaked with our cum, then played with her clit until she writhed out another climax. Tim and I sat there totally mesmerized at her display of eroticism, both of our cocks again becoming erect. She held out her arms in invitation, and we both had her again one right after the other. I let him get to her first, then had her myself. He had the sense to leave us alone afterward as we hugged and cuddled, and joked about how we would need to call in a carpet cleaner. The rest of the week was fabulous as each day we had a night long threesome in our big bed. I don't how any of us got any sleep since each time Tim or I awoke during the night we would have her, which would wake up the other one and he would have her right after. And the second Saturday was an all day lazy marathon of sex, interrupted only by some meals and calls of nature. We used up a whole bottle of personal lubrication keeping her pussy from wearing out. the only rest she got was during the daytime when we were at work. Each of his week long visits in the year since then have been a repeat and, for my wife and me, the frequency of our sex life between Tim's visits has dramatically increased as we re-live those week long experiences.