I met a couple who invited me to join a sex with them

I went on a vacation to a nudist resort. The sun, the sea, and the freedom to be naked were intoxicating. On the second day, I met a couple who invited me to join them. We found a secluded spot, and they started to undress. The husband went down on me, while his wife straddled his face. We were all moaning, our bodies writhing in pleasure. The husband then stood up, and I could see his hard cock, ready for me. His wife moved to the side, and he entered me from behind. The combination of the sun, the sand, and the forbidden act made it even more intense