I've just read the story "nurses" posted yesterday and can recall a similar shared experience from the late eighties. For all the things that have happened since and all the water under the bridge it still thrills me because it was so unique. I was about 27 at the time and had been a father for about 3 years by then and had really settled down. My partner though was still wanting to party and seldom came home the same day she left. Things changed in a big way one night when she had came home drunk with her panties in her bag and her tights ripped. I stripped her off to see her pussy was swollen and dripping with spunk having been freshly shagged by an ex boyfriend of hers. Although at the time it was torture and massive mixed emotions it was something we later developed as it had been pillow talk and a fantasy of ours before it actually happened. Like lots on here I shagged her myself almost immediately as she gave her tearful confession. That night she offered that I could ride anyone I want "to square the books" as it were. My then partner was stunningly beautiful and I really wasn't that interested in anyone else, although I raised the "offer" a few times when she was sober she quickly cooled on it. When she had a wee drink in her though we would fantasize about how best to achieve it. Her nights out became less and less and when she did venture out it was with her friend Sandy who always stayed at ours that night. We used to frantically shag in the room next door to Sandy and my ex "G" used to say "she's probably rubbing her cunt listening to us". That did turn me on and I loved the cheeky grins the next morning. "G" also told me she had shown Sandy some of our polaroid's and that Sandy admitted got wet looking at them. I thought she was just saying it for effect though and believed it unlikely. Sandy was a year older than me and although not the looker my partner was she had a gorgeous figure enhanced by massive tits. She was always modest in her dress sense and gave little away. After a typical Friday night out for them "G" Sandy and me had one more drink downstairs before we went to bed. "G" was unusually all over me in front of Sandy before Sandy trotted off to bed after 30 minutes or so. It did occur to me the atmosphere seemed different that night. "G" and me got down to some heavy petting as she had put on her nightie, and I only had shorts and a tee shirt on. During our preamble for sex "G" said "if I let you cum for someone else can we put this to rest?". Obviously I said "yes" thinking it was just more fantasy talk. "G" and me were totally in tune that night and soon her nightie was off and I was down to the tee shirt. It was thrilling to think Sandy might come down for a drink or something and the thought of her catching us was awesome. After ten minutes of been brought close to orgasm "G" said "I need to check on Sandy, give me a minute". I watched her beautiful naked frame ascend the stairs and two minutes later she signaled me to come up as she placed her finger to her lips indicating silence. Not totally understanding I took off the tee shirt and naked, climbed the stairs too. She was shaking with anticipation when she said "you cum once and we're square, right?" Still not understanding I simply nodded. "G" led me by the hand to the bedroom Sandy was in and had the door slightly ajar with the hall light on dim. With us both standing there naked it was understandable our chests were heaving as we peeped round the door. There on the bed with the blankets and candlewick at her knees was an apparently sleeping and totally naked Sandy. I backed away slightly to control my breathing but "G" led me inside the room close to the bed. Being honest it didn't seem right and I was panicking a fair bit. "G" whispered in my ear to relax or I wouldn't cum. With the light from the hall and the curtains slightly open she was totally visible and an awesome sight. She seemed to be in an unnatural position though, laying on her back with her legs slightly apart. As I tried to get past "G" and leave the room she said "cum first" as she took me by the cock and started wanking me slowly. Sandy looked fabulous and I wanted so much to touch her 80's bushy fanny and massive tits. With "G" was standing naked next to me naked playing with my cock and Sandy on her back 12 inches away I shot my load in seconds. I again tried to turn half away as I came but "G" kept my cock turned to the bed and as I reached back and slipped a finger in her soaking cunt she came immediately. I couldn't believe what had just happened and as I climaxed a jet of spunk squirted across onto Sandy's tummy. I did think the game was up and covered my mouth in fear that she would awake, but she didn't. We both reversed out of the room as my legs almost gave way and I kept my mouth covered to control the panic in my breathing. "G" pointed to downstairs and whispered for me to give her a minute to sort things. I sat in the living room wondering what had hit me when "G" appeared back down a few minutes later. When I told her I was freaking a bit she said not to worry as Sandy always said wanted my spunk and had a wanking fantasy and was in on it too. I was sworn to secrecy that and I had to play along for Sandy's sake. I was still a bit dubious until I'd listened to Sandy's headboard rattle off the adjoining wall 3 three times that night and gave me perfect peace of mind. It seemed that was that until a month or so later when "G" said Sandy's only regret was me not coming on her pussy. The next time she stayed we did the pretend off to bed thing and ten minutes later "G" and me went upstairs naked and entered the well lit room. Sandy had placed the pillow half way down the bed with her head on it and her legs wide open draped over the side. The really noticeable things were that Sandy's breathing was heavy and her soaking fanny slit was wide open and pouting. As I took up position and stood between her legs ready to cum "G" stood next to me rubbing her own pussy and indicated for me to move my cock closer to Sandy's pussy. I leaned forward and supported my weight on the bed with my left arm and boldly rubbed my knob end up and down her soaking fanny lips causing them to open further. Sandy was twitching and omitted a sexy whine as soon as she felt my cock contact her cunt and opened her mouth slightly when she gasped. I didn't fully enter as I hadn't been authorized but kept the tip of my cock between her fanny lips and definitely squirted plenty inside and watched Sandy shudder as I came buckets. After every session we'd fuck all night listening to Sandy finger herself in the next room. We accommodated all of her fantasies for about two years and for all the orgasms she had being licked out or finger fucked we never did full Monty. We parted on good terms when "G" and I split up and never shared our secret with anyone.