This happened in my early twenties. I was volunteering as a chief organizer for a local fund raiser and arranged for many donations to be brought in. One of which was from a local hair stylist. I agreed to pick up the vouchers and met with her briefly, as we chatted a sense of ease was apparent and I booked my next cut with her for later that week. During the cut, we chatted like old friends as I found out that her husband was an engineer for environmental studies at a local think tank. We quickly became good friends and her husband was a great guy but a little inapt when it came to some of the hands on manual labour that a large country property offers. We spent many days and evenings talking and getting very close. When I had some time I would stop by and help with basic electrical, swapping the filter for the pump on the pool, change the oil in the lawnmower.... As this went on for a month or two and we started having a little wine together (at times too much). This is when they let it slip they loved to skinny dip in the moon light. As it was still light out, I told them it is too bad night has not come yet as I'd join them for sure laughing. With a gaze they took my drink and brought it by the pool and sat on the comfy chair. I followed half stumbling as he dove in. As it was hot, I took my shirt and looked around as my shorts came off. It was nice to dive in feel the cool water on my skin. As we laughed, his wife strolled out from the house and made no attempt at modesty as she pranced nude on the deck before slowly climbing down the ladder. I had to look away as my semi hard on would be visible. As we discovered, Nat's big boobs floated quite nicely in the water; and we get very comfortable in being nude together - during swim time that is. One afternoon, after a long week of travel, I got a call asking for some help. I changed and drove over after jokingly telling hem this will cost you dinner. I arrived to their house and found the wood splitter blew a hydraulic hose. I did ask them to get a spare before as it was a little ratty looking and fumbled in the work shed to find it. Getting the tools out Rich helps me out as Nat is getting the BBQ ready as it was a really nice summer evening. Rich and I work on getting a new hose on, change the hydraulic filter and then start filling the system and priming it - all the time talking and making the occasional remark about how great Nat looked today. He mentions she likes me and was happy I could come over on such short notice to get this done so they could enjoy the weekend. Not sure what to say, I shrugged and said yes she is very nice with a smile. He laughs and says didn’t I notice when she cuts my hair she always wears a miniskirt and tight top sometimes without a bra and rubs against me. Blushing, I mentioned I did and really liked it but thought it was just her being her and am flattered it was for me; it is very hard to keep still and leave my hands to myself I admitted not thinking. Rich laughed and simply said why do you? Nat is a good looking woman with nice round full breasts and all the right curves; some would say a little heavy or zaftig. To me she had a Marilyn figure maybe a little more but very shapely. Rich just smiled and slapped my back with a laugh and added let's eat. As we got to the deck, drenched from the work out under the strong hot sun, I said I could really use a shower or at least clean up before. Rich looking at our greasy hands and trickling sweat nodded sharing my view so off we go. I follow Rich to the main bath and he says, if you don’t mind we can shower here and save time. As I got to their main bath for the first time, I see this shower that is big enough for four people - it's huge. I smiled and remarked it wouldn't be the first time we saw each other nude and stepped into the large space that offered two shower heads with separate temperature controls.... So he gets in first and starts washing off, the steam filled enclosure is erotically sensual and instantly feel relief as the warm water cascades over me rinsing the greasy sweat off. Before I notice he is out and mentions take your time dinner will be ready in a few minutes, as he picks up what I thought were his clothes from the floor. I finish rinsing off and step out noticing that the big towels are missing and a medium size one neatly folded for me; and worst, my clothes are no longer on the floor. I dry off and stand there not sure what to do. I cover up a little and sneak to the door looking down the hall thinking WTF? As my head peaks out I see Nat walking towards me with this BBQ apron on she asks if all is ok and I smile and replied I could use my clothes... She snorts a laugh and grins saying Rich tossed them into the wash for me, just relax and bring your towel to sit on smiling at me. As she turns around I notice for the first time that all she has on is the apron. Her breast perfectly cupped in the material showing that beautiful silhouette, her bare back fully exposed and her beautiful round ass seemed to be smiling at me like a Cheshire cat. Trying to control myself, I turn the corner and see Rich sitting there naked as well. He looks at me and replies it's too hot out for clothes – we didn’t think you’d mind after all the swimming we have done this summer. He was right… I strolled down the hall getting the last of the water from my hair and notice a fresh towel on the chair across from Rich. As I sat at the table, the chicken and salad are served and Nat then walked to the stove area and takes the apron off and turn towards us revealing herself fully for the first time, I could not help but get instantly hard as her breasts bounced with each step slightly swaying and her muff was perfectly manicured with a small landing strip almost pointing to her pouty lips. Unfortunately for me, the table is a glass top! She simply smiled at me not saying anything. We ate and laughed at ourselves and the sexual innuendos flying around as we had a little wine – perhaps too much. Rich mentioned that since we had a few and was thinking about getting another bottle of wine I should sleep over; who can argue with that logic. He got up to get the bottle and Nat catches me looking at her breasts as one of her nipples is resting on the glass table and as erect as I have ever seen... she giggles and says the glass is cold. Perhaps it was the wine talking yet the next thing out of my mouth was telling her I would love to warm them up for you with my mouth but I’m afraid I won’t be able to stop there… and besides Rich would never approve. Nat chokes back a laugh as Rich walks back in holding another bottle noticing the stillness of the conversation. Nat turns informing him that I wanted to warm her nipples up with my mouth. Blushing I start shacking my head thinking I really did it now. Rich’s expression turns more sensual and replies I am sure her nipples will grow even more with that kind of attention. Nat now pointing at Rich whispers looks like he is getting bigger too, as his cock begins to swell slightly. Puzzled I look at her and she tells me that they enjoy having an additional person in their relationship from time to time and that they liked me very much. With that, Rich added, what do you think about being more than just friends? Nat said, normally we do not play at the house but we wanted to get to know you much better she stated… Besides the fact that she knew through our many discussions that my sex department was virtually nonexistent and that I was as safe as they come. I remembered we always joked about "did you get lucky?" and the amounts of cold showers I had to endure. At that, she stood up and walked around the table to me as Rich poured the wine and she leaned down letting her large breasts hang beside me, touching my arm as our lips met for the first time. It was the most wet and hot kiss I had had in a very long time, our tongues finding each other and my hands went from the small of her back to her ass needed her cheeks like a baker to dough. We moved to the living room as I sat down not even fully on the couch as her mouth easily found and was wrapped around my hard cock. It was heavenly, then like a fog lifting I saw Rich standing in the doorway with the fresh bottle and glasses on a tray. He grinned and suggested we take this to the bedroom. That night we had wine watched each other with Nat and mutually cuddled her playing with her tits or pussy only taking time to put on a new condom when needed. The next morning, we showered and got breakfast ready again not wearing anything - but I was so comfortable it was great. The following few free evenings and weekends were very similar. UNtil one night when Nat whispered "I want to feel you fill me tonight" over excited I couldn't help but get a raging hard on. Rich surprised by her comment was both excited and curious how this would go. That night was a little different, as we played and took turns, our sessions crossed into each others and we were all at one time or another touching each other or helping to guide hard cum covered cocks in Nat. It was so surreal as how am I enjoying holding another man's erect penis and wanting more but afraid. Taking a small break, we lounged in the secluded hot tub for a bit and then Nat said "I want cock" with that she got up and went inside, Rich looked at me and made motion to go so he and I followed. Rich started cupping her tits from behind and then lowered a hand to her waiting pussy, as I stood there getting harder. Nat looked at me and whispered she wanted to sit on my face, with that I was on the living room carpet in a flash, she lowered herself but in a revers cowgirl as she reciprocated; I could taste a hint of the afternoon's delights still dripping from her, a mixture of sweet musky flavours. She rode me lifting herself so I could lick her dangling pussy lips and suck them into my mouth as she kept herself vertical. I felt a warm mouth engulf my cock, but it was different she was sitting up… and for a second a shiver of panic shot through me as four hands caressing me easing my tension as I relaxed. Wow, my first bi experience as Rich savored my manhood. We spent the rest of the day experimenting as Rich massaged and sucked me and I apprehensively at first took him in the heat of our play and then Nat joined Rich in sucking me.... We had toys out and the room was so sexually charged we could have done anything to each other. Nat got out a small strap on and told me to watch as she slid into Rich I leaned in and played with Nat's clit then Rich's cock, stroking it like I enjoy it as he came hard but wanted more. Nat took a condom, rolled on my hard cock and said do us both as she leaned forward next to Rich. I froze as she reached and grabbed my erection guiding it towards them. I've never given anal before... Rich took more lube and dabbed it on Nat's ass and slid a nice butt plug into her as she moaned, then he lubed his ass more and just said take it slow. Not knowing what to really do I got the head close to his hole and slid in slowly. First the head, and moved it in and out slowly pushing a little more with every stroke, then half way. Soon I was slowly sliding my entire length into Rich as his cock shot another load without being erect. Nat had her face in a pillow and fingering her pussy in front of me and using an anal plug herself. I slowly pulled myself out and moved to Nat slowly entering her. She was also tight and I stopped half way not wanting to hurt her either. A few strokes in she met my downward thrust with her own and I was balls deep in her ass - so different, tight all around, hot and almost a sucking action. A few minutes and Rich got up and went behind me playing with my ass and balls. It felt so nice and I was unsure if I wanted the feeling to stop. Noticing my apprehension and nerves he took a small butt plug and lubed it up as he moved it closer to me and said this will be the best feeling and slowly inserting a butt plug into me all the while pounding his wife feeling a new sensation and seemingly getting more aroused as he was getting hard again. He stood and was stroking his hardening cock in front of me as Nat was looking at me through the mirror of the hall closet. I want to see you suck him as her breathing became more rapid. I took his cock into my mouth and sucked him fully erect tasting his previous eruption still present on his awakening cock as I fucked Nat in the ass. He then tapped me to stand aside as he wanted to fuck her good. I took the condom off and cleaned myself off with warm soapy water hearing the play continue as I returned still rock hard. Rich entered her and pounded until he came filling her ass with hot cum and letting it drizzle out. I had seen him cum in her pussy but this was both the first time I had given anal sex and seen cum dripping out and down over her pussy painting such a scene of erotic chaos it was almost mind blowing. He took his finger and played with it a little, spreading it a little before he went down on her and licked her ass and the drizzle that was running to her puffy lips. Nat rolled on her back as Rich moved aside allowing me the pleasure of licking her pussy and some of his remaining spunk before getting up and sliding my cock into her. Our pace quickened as I said I can’t hold on... as she groaned Yes! Fill my hot pussy, I want you to cum in me HARD!!! I came so hard it felt like I was peeing; filling her and almost collapsed to her side as Rich first licked me and then spent time licking my cum from Nat's pussy. That day was spent openly enjoying each other without any jealousy or schedule. The day turned into night and what that the weekend was done, as I had to get dressed and get ready for work the next morning – what a weekend. Over the next two years we developed such a deep rooted live-in friendship that we could tell each other anything and at times we invited Nat’s girlfriend to spend time with us also during some of our open play. To be truly open with select others while maintaining a solid line of communication was astonishing. It seemed the emotional connection at times was greater than the physical and in true fashion vice versa. We tried to see each other a few times a month at first and then became a monthly get together. At times Rich and I would watch a movie and laugh like old buddies and other time it was Nat and I. It was very open and carefree and never got beyond what it was – loving, honest and open. It had never occured to me we were actually living in a Poly triad, there was no "term" for this other then we are roommates. One day the news came that Rich was being transferred to the West Coast for some long term environmental assessment study. That weekend we loved and played like the world was coming to an end. The passion and caring was overwhelming. Although our lives have taken separate paths, I am still very thankful they showed me how open love should be and how two, three or more people can interact together, being together without fear of judgment or jealousy. Even after twenty years, we do still keep in touch and one day I hope to visit them once more as a room will always be ready for me. We keep teasing we need to have a weekend together when their and my kids are gone and either rekindle the flames or simply laugh and love each other as old friends.