I had always thought that my wife didn't really like sex, until I saw her bent over a desk getting fucked by another man. We were at a party, and I wanted to get some air, so I wandered upstairs away from the crowd. As I went down the dark hallway, I heard muffled noises from the end of the hall. There was a door cracked open, with a bit of light leaking out. I went closer, then stopped cold when I finally got a good look through the open door. It was a home office, and my wife was bent over the desk, her hands grasping the far edge. A man was standing behind her, pounding her hard from behind.
They had obviously been going at it for a little while. Her skirt was pushed up around her waist, her sweater was pushed up above her breasts, and they spilled out where he had pulled her bra down. Her head was thrown back and she gasped in pleasure with each thrust. I moved a bit to the side, and recognized the man. John. My wife, Sandy, is very active on local boards and committees, and he was one of the people she often worked with. He's a bit taller than I am, and I could tell in much better shape. His shirt was unbuttoned, open, and it revealed his taut abs that flexed each time his hips thrust forward and back.
Sandy and I are in our mid-forties, and to be honest, look pretty good for our age. A lot of that is just keeping yourself up and not letting yourself go, then you look better compared with everyone else. Sandy might not get your first glance, but on second glance you noticed more. She is a bit short, under 5'4". Her breasts are full, and her lips are lush and inviting. Her blue eyes sparkle with humor, and her shoulder length hair is tinted blonde. Her legs are toned from constant jogging, and they join nicely with the swell of her ass and hips. Hips which John now was grasping firmly as he stroked his cock in and out of her pussy.
I was frozen in shock. Sandy and I were members of the once a week, if that club, and even then, she just didn't really seem to be into it. Typically, I'd get in bed where she was lying on her side watching TV. If I was horny, I'd snuggle up against her, rubbing my cock a bit against her ass. If she wasn't willing, she wouldn't respond, and I'd eventually just turn over. If she was, she'd roll over, and we'd kiss for a bit while she pulled my cock out. She'd stroke me until I was hard, seemingly wanting to just get going. I'd pull her pajama bottoms down, and usually get on top. I'd thrust quickly, while she usually lay there, eyes closed. I have to admit, usually with less than a minute, I'd be cumming.
Sandy usually didn't even take her top off, and we hadn't done it from behind in years. But now her full breasts were bouncing back and forth, and she was being fucked -- and fucked well -- from behind. John kept on going, hard and harder. I knew I should burst in, but instead found myself with a raging hardon in my pants. It only got harder when Sandy reached one had back to rub John's balls. he moaned, and thrust more vigorously. I found myself rubbing my cock through my pants as my wife bit her lip, holding back the cries of her orgasm. I gasped myself, in shame and horror as I found myself spurting in my pants. John kept thrusting, then throwing his head back moaned. I knew he was filling my wife with his hot seed.
