My neighbors are both teachers and when the school year is over they head to Europe to another home they own. While they are away they rent out their home to others. This year they rented it out to a couple that was from Germany. During the summer I spend a lot of time in my backyard tanning and this year was no different. I never tan nude as I am fearful that neighbors may see me and have idea how they would react. I do however wear speedos and even have a g-string I sometimes wear for a more overall tan. I reserve wearing the g-string to a part of my yard that is more private and could only be possibly seen by 2 neighboring houses with one of those 2 houses being the teachers house. I was out in my backyard wearing the g-string when the renters showed up and introduced themselves to me. They told me they would be there for 2 months and we had a quick little chat with me standing there in just my g-string. It was embarrassing being seen the way I was but there was I could do to change what they had seen. The next day I look out back and I see the 2 of them out in my neighbors backyard. The wife is topless and the husband is full nude. I went out for a closer look and to see how they would respond. They talked to me like it was no big deal and asked if I was coming out to tan too. I told them in a couple of hours when the sun would finally be shinning in my backyard. They invited me to come over and tan with them and I had some hesitation but agreed to it. I went over in a speedo and a towel. They told me I didn't need to wear the speedos if I didn't want to. I told them I didn't know how other neighbors would react of feel if I nude. They said they didn't mind and pointed out that with the trees in the yard it was only my house that could see into the yard. It was the first time I ever in this backyard and it was true that except for my house no one else could see in. I was hesitant but realizing that they had seen me in a g-string yesterday, which covered very little and that he was nude and her partially nude, I just went ahead and took them off. I had always wanted to try going nude in my backyard but the fear of being seen by neighbors and how they would react prevented me. There I was nude and casually talking to them outdoors with any concerns I had quickly evaporating. The day came to a close and they invited me back tomorrow. The next day both of them were nude. The wife was not shy about hiding her pussy and she caught me taking peeks at it. This couple was 20 years older than me but she was a very good looking woman. Once when the husband went inside to use the bathroom she told me she noticed me looking at her but not to worry because she liked looking at me too. She did tease me by flashing her pussy to me on more than one occasion. I spend quite a bit of time with them nude over the 2 months and surprised myself when on the last few day with them I let them take pictures of me while I was naked. I never would have allowed being photographed nude before but I figured they wouldn't do anything with the photos so I allowed. We traded email addresses and once they were back in Germany they emailed me and my neighbors telling them what a great time they had and how great I was. In the email was a link to a site where they had posted pictures they had taken. I got a little nervous and when I saw the pictures, there I was nude and a lot more. During their stay anytime the husband got an erection outside he would go and stroke it out. I saw him masturbate many times during the month and just like the husband anytime I got an erection I did the same thing. The first time they convinced me to do it was a little embarrassing but soon it was no big deal doing it in front of them. I don't know how they did it but they had taken pictures and video of me doing this and it was posted as well. My neighbors, and pretty well the rest of the world, had access to it all. My neighbors had seen all that was posted and made these comments. They said, "Never expected to see you naked. Never expected to see you do that. Never expected to have it posted for all to see. Come over as soon as you can so we can get a better look at you." I thought they were joking but they weren't. They literally had me over and once I was there they wanted me naked. When I refused they mentioned letting other neighbors see the photos and videos. I gave in and off came my clothes. I was surprised with what happened next. They undressed too. They told me they spend most of their time naked when they are at their Europe home and it was nice to know that they had some here that was a nudist too. Could this have gotten any better? The 2 of them approached me and began to initiate sex with me. I couldn't believe it. They told me afterwards they were swingers as well and that he was bisexual. I realized he was at least bisexual because after I fucked his wife he pushed his cock into my ass. The weird part of that was that I didn't stop him. After this day we had a new found relationship which has resulted in some new and questionable sexual experiences for me.