It happened by accident. We'd never expected to end up in an MMF encounter, but that is what happened. We'd had a party with many people round but as it started to subside, there was just me, my wife and best friend left. I won't deny that I'd always likely the idea of watching my wife with another man but it had never been a plan, especially since Jenny, my wife, had always been quite prudish. However, as the party cleared unforseeable things happened. As a joke I suggested a bit of spin the bottle, with a truth or dare element. So it happened. The three of us, me, Ben and Jenny. I should point out that, at the time Jenny was mid 30s, slim, and with an ample and envious 32e figure. The spin the bottle began well with simple questions, but inevitably moved on to more personal things. After the first few, the dare to 'take off an item of clothing' seemed favourable to all, rather than delve into deep secrets. In fact, after the first few rounds it became almost standard to just take off an item. It wasn't long before we were all down to underwear. I should mention that, despite this, Jenny had remained largely fully covered by cushions, despite being down to bra and panties, whilst me and Ben were in our boxers. The crux came at that point when the bottle landed on Jenny. She removed her bra but skilfully did it so that she remained covered by the cushions. This was clearly taking things to a new level. We all knew it. Although we'd not seen anything, both me and Ben realised that there was potential for something more. At this point, Ben cleverly altered the rules. He said that, from now on, the results of the bottle should reverse. forfeits could be replaced by hands on activity, but that they could also be called by the person upon which the bottle lands, to shift the goals of the game. Obviously Jenny was in no position to argue, being in just her panties. However, this was merely an option. The next spin landed on me and, according to the newer rules, I asked Jenny to remove her panties. She complained briefly but mostly it seemed for effect, and soon complied, leaving her completely naked, albeit mostly hidden from view behind her cushions. The next spin landed on Ben. He also embraced the new rules stating that he wanted to massage Jenny's back, using the new rules. Agreeing, Jenny lay on her front, draping her t-shirt over her bum to cover herself. Ben began his massage and rubbed his fingers into her shoulders. Jenny was obviously loving this and sank into the carpet As Ben moved down Jenny's body his hands gradually ran down beneath the t-shirt but without removing it. His hand then ran down the sides of Jen's body, caressing the sides of her breasts, down over her hips, lifting them slightly so that his fingers reached just under them onto the front of her thighs. This went on for some time with me watching. I was in heaven seeing my beautiful wife being touched in this way, and I could easily tell from Ben's boxers that he was getting excited. Finally Ben stopped and sat down next to Jen. She grabbed the cushion to cover her front as she sat up, but for just a moment her beautiful breasts were on show to us both. It was Jen's turn to spin the bottle again and it landed back on her. She instructed me to remove my boxers which I did, now completely naked, though covered by a cushion (mainly to hide just how aroused I had become). The next spin landed on me. I think that the booze and excitement was getting the better of me and I decided to give Jenny a dare. Having noticed how aroused Ben was (which I don't think she'd noticed) I dared Jenny to give Ben a shoulder rub, knowing that she'd not be able to keep herself covered up. Jenny told Ben to lie on his front and to close his eyes whilst she moved. He did as he was told and was soon led down as Jenny straddled him so Ben wouldn't be able to see her so well. Initially Jenny tried to keep a bit covered up but it was clearly not going to work, so she told Ben to keep his eyes shut. He obeyed to begin with, enjoying my wife's hands on him and the feeling of her naked body straddling him. However, after a few minutes he opened his eyes. He caught my eye as if to check I was ok with this and then ran his hands down behind him and onto Jenny's thighs. Jenny pushed his hands away initially but when he put them back again she left them. As Jen massaged Ben's back, Ben's hands caressed the sides of her thighs and her bum. After a few minutes Ben raised himself onto his elbows and twisted round. Jenny struggled not to fall off and, in that instant, Ben was suddenly on his back with my naked wife sat astride him. The look on her face was one of panic and shock, but also excitement. After a pause as Jenny pulled herself together, she looked briefly at me before placing her hands on Ben'd chest, continuing her massage. After a brief moment Ben's hands also reached up, initially onto her hips, before exploring Jen's breasts and gorgeous nipples. Then his hands were back on her hips pulling her naked body against his hard cock, with just the thin cotton of his boxers between them. As he did so, I noticed how he very slightly lifted his hips, pushing himself against her. It quickly became apparent his much Jen was enjoying this. She can often climax from this position without being entered and she was clearly getting closer. As Ben had begun his gentle thrusts, Jen's hands had moved down his body and were now on his hips, her thumbs sliding inside the waistband of his boxers. Ben reacted with more sustained thrusts, and Jenny's hands moved nearer to his cock. Ben the responded, taking his right hand off her hips, he began rubbing his thumb over her clit. Almost immediately Jenny screamed out as she came, rubbing herself along the length of Ben's cock as he fingered her. She climaxed for about 30 seconds before she collapsed on top of him. After perhaps a minute, Jen raised her head again and pushed her long blond hair off if her face. She then kissed Ben deeply, before raising herself back up. Ben's hands went back up to caress her tits as she rubbed his chest. She looked at me and said, "wow. That was unexpected. Do you think I've been a little bit selfish though?" I couldn't believe it. I stuttered something incoherent as she looked back at Ben. She then stood up, completely naked for us both to see, and then told Ben to stand up too. Ben stood up, his hat cock very visible through his boxers. Jenny then said something about evening things out, before grabbing the sides of Ben's boxers and pulling them to the floor. She then took Ben's hand as he stepped out of his boxers and led him towards the sofa I was sat upon. As she reached me Jen grabbed the cushion that was covering me and threw it to the floor. She told me to move up to one end of the sofa and sat next to me, pulling Ben's hand to indicate that he should sit on her other side. She then kissed me, turned to Ben and started to snog him very enthusiastically. As they snogged, my hands began to wander over her body, feeling her tits and playing with her nipples, and feeling just how wet she was. As I caressed her, my hands kept bumping into Ben's as he was doing the same. Jen then turned to snog me and I noticed that her left hand was wrapped around Ben's cock, slowly wanking him. Then I felt her right hand on my cock. A cock in each of my beautiful wife's hands. It was surreal. Now Jenny has never given head so, when I heard Ben whisper to her "suck me" I was completely shocked as she took her hand off my cock and turned on the sofa, kissing his chest and gradually moving down until I saw her open her mouth and wrap her lips around him. She had to rearrange herself as she did this so that she turned onto her front, her bum towards me. After a moments hesitation, I lifted her hips a bit so that she was almost on all fours along the sofa. Holding her hips, I entered her from behind, feeling her body shudder. I began fucking Jenny from behind as she sucked off my best friend - he was experiencing something that she'd never done for me. I came quite quickly and withdrew, sitting back down, with her continuing to suck Ben for a few minutes more. Then Jen lifted her head, kissed Ben, and then turned onto her back along the sofa with her head and shoulders on my lap. Ben responded and positioned himself between her legs and began fucking her missionary style, as I played with her breasts. She began cumming for her second time, screaming out rhythmically as Ben pounded her harder and faster. Then, she screamed harder as she could feel Ben's cock swell as he reached climax, pushing her over the edge. As the both came together Jenny held my hand, squeezing it tightly, before they both collapsed. It was a good few minutes before anyone stirred. As Ben got up and withdrew from her, Jen said "time for bed then?" Within minutes we were all in bed naked together, with Jen in the middle. Within seconds both her and Ben were asleep, whilst my head raced with what had just happened. In the early morning as I dozed I noticed that they were playing together again but just touching eachother. But when I awoke I was alone, although I could hear their giggles. I went to the bathroom and saw that they were showering together in our shower cubicle. They hadn't noticed me so I watched from the door through. I saw that she was on her knees sucking him again for a while, before she got up and I saw her back pressed against the glass, her legs wrapped around him, as he fucked her against the side of the shower.