This summer I went on holiday with girlfriend in a foreign country in Europe. We had our car so every morning we'd drive from our hotel to one of the more reccomended beaches, which were usually wilder and a little harder to reach. These beaches always had a fkk side, usually located at the end of a long walk - distant enough from where we'd unpack our stuff and set. Also, the nude area was mainly populated by mature men enjoying the sun, nothing that would catch our eyes, so basically it was just as if there was no fkk area at all.
On the last day of vacation we decided to try one particular beach located inside a camping. We drove all the way then entered the camping, paid an excessive entrance ticket, then drove again inside the camping to park at the end of it, near the cars exit.
So we arrive at the beach, unpack our stuff and settle, and I notice a path with a sign - fkk area. Basically we were in the last part of the textile beach, and walking further to the the fkk part of the camping would have required to get naked - at least according to the sign.
The moment I noticed the sign I got fantasies and started thinking of ways I could get my gf to enter that part of the camping without asking for it in an explicit way.
I couldn't come up with any excuse but in the afternoon my gf started wondering about where we could shower before returning to the hotel, so we went snooping around. We did find the camping toilette in the textile area but my gf did not want to use those showers. Then we went looking in the area after the fkk sign (without taking our bathing suits off) and found ourselves in a huge naturist camping. We saw a shower shortly after the "entrance" (in plain view), then walked back to our spot on the beach.
Now I was seriously thrilled. Things were playing spontaneously, without me doing anything suspicious, in a way that me and my gf would have to shower in a nude camping. All I had to do was convincing my gf that showering in a nude camping (also for free) required us at least to respect the rules by doing it nude.
We went for some more swimming and I started throwing hints at the possibility of swimming naked in the fkk beach and then shower there before leaving, but all I got was "we'll see later", so I left it at that. Then when it was time to go and we started walking to the fkk camping to shower, when we got closer to the shower we noticed people suntanning and swimming nude on that part of the beach. I took one last chance and asked my gf if she wanted to go skinny dipping with me, pushing a little by presenting it as a once in a lifetime experience we would not be able to repeat in our country. She answered "if you really want to do it so bad, ok" - but it sounded so much like an imposition that I pulled back.
So basically I got massive thrills just by the possibility of something that did not happen