My wife and I live in our 3rd duplex. It's a stack duplex and we rented the upper level to a buddy of ours, he has a wife and a kid. My wife and him had been intimate during their stay and he knows I know of their relationship and enjoy it very much. I have so many stories of them but I'll share this one instead.
On my birthday, we had a gathering with a few of our friends and they came down to celebrate with us. Afterwards around 9pm, everyone left, leaving just us five (Me, my wife, my buddy, his wife and kid). My wife and buddy got a little touchy whenever my buddy's wife wasn't looking which made me excited. My wife had on a sexy white ruffle lace mini-skirt, she brought me to our room and took off her panty, saying she wanted to have sex with my buddy while his wife was here. I was so arouse hearing her say that because this was the first time ever!
My wife ask my buddy's wife if she could help her in the kitchen. Their kid was in the guest room with the door open and playing with his toys in a gated area. After some time, my wife came in with some drinks while my buddy's wife was still in the kitchen. I could see that my wife had pulled up her mini-skirt, she stood in front of my buddy and leaned down to the coffee table to give us our drinks and in doing so, flashed my buddy with her glorious privates right next to his face! He was red face and looked at me as if to say, "You guys are crazy!" and I just winked as I got a hard on witnessing it. She then went back into the kitchen and return minutes later with some snacks and did the same thing, flashing her privates in front of my buddy's face. He got brave this time and grabbed her ass and started ravaging her cunt and asshole with his tongue. I watch as my wife closed her eyes and bit her lip trying not to moan in pleasure. I wanted to keep watching but calmed myself down and went into the kitchen to distract my buddy's wife. We were talking for a good 10 minutes or so until my wife and buddy including his kid, joined us in the kitchen.
I could tell my wife was really horny and wanted his cock badly. My buddy told his wife that she should go home with their kid, their kid was getting fussy and that my buddy would follow up soon. His reason was that I wanted him to take a look at my PC. I backed him up and ask his wife for my buddy to stay for a bit, she was ok with it. My buddy and wife went back into the livingroom after saying bye. She didn't think much of it as we were all friends. I thanked her for coming as I walked her out into the foyer and watched her go up the stairs to their house.
When I closed the door and locked it, I immediately heard clapping noises along with faint grunting and moaning. I was starstruck! They started fucking the minute they went back into the livingroom while his wife was still here! And once they heard the door close, they stop holding back and fucked louder as if to lure me in their direction. They could have been caught if his wife had made the multiple choices to stay or come back!
I was so hard from that realization! I rushed into the living room, seeing my wife was laid on the couch, her shirt and skirt on her waist exposing her perfect body, her perky breast and tight cunt. She had one leg wrapped around my buddy's leg while the other was held up by my buddy to reveal her wet pussy for his cock to enter in and out of her. My buddy partially had his shirt and pants on, uncovering his waist to his legs. He was fucking her like a madman, pushing in and out with such *******!
When I talk to them they never look my way, they always have their eyes locked on each other, I see it as if I was their conscience encouraging their affair. I told them that they were crazy for fucking when his wife was still here while making my way to the couch next to theirs, unzipping my pants and stroking my hardened cock. My buddy, without looking my way, blamed my wife for being such a "cock tease". My wife giggled and said how fun it was to mess with him. I told my buddy that my wife was a whore and needed to be punished as I ferociously stroke my cock. He agreed and started to fuck her faster. My wife was cumming and was holding her screams in. I then persist as something came over me. I told my buddy that she needed a bigger punishment, that he needed to cum inside her and get her pregnant. My wife's mouth was open as she gasp, "What!?"
I continued to encourage my buddy to impregnate my wife. I told him to tell my wife that he was gonna impregnate her. He was still fucking her but his mind paused for a second and then answered saying, "Yea... I'm gonna do it... I'm gonna cum inside you... I'm gonna impregnate you!" He position my wife underneath him and spreading her legs wider, his face next to her face, eyes locked. Music to my ears as he just kept repeating those words over to my wife. She had the look of shock and knowing there was nothing she can do, told him to "do it... cum inside her". After hearing that I was about to explode but I wanted to see them climax first before I did. Fortunately, within seconds they did, my buddy yelled he was cumming inside her as he grunts with every thrust deep inside her cunt! My wife buried her face into the pillow, unleashing her scream of pleasure and squirting all over his cock! I too came hard, but not wanting the carpet to be stained, came in pools on my hand as I witness my wife and her lover make love. My buddy turned to me and ask me if I thought they (his semen) made it, I told him, "I sure hope so." We laid there for what felt like 5 minutes, they were pecking softly at eachother and soon the sexual episode left us. He took a quick shower as I kissed my wife and told her how wonderful she was. She smiled with delight and drifted off to sleep, exhausted. I cleaned myself up in the kitchen. My buddy came by, thanked me for the party and wished me a happy birthday. I shook his hand firmly and gave him a hug. "My pleasure." I said and thanked him for the show. "Anytime" he said as he left to his wife and kid upstairs.