After my swim I look a shower but had to wait while the guy before me finished, I was rinsing my costume at the sink but I kept looking at the guy washing his body and noticed how he was taking extra time with his cock which looked erect. I was concentrating on getting the pool water from my costume when I felt something along my crack, I was going to turn and see what was happening when I heard him say relax and that I will enjoy it. He was soaped up from the shower so he had no trouble slipping inside me. I was shocked at what he was doing but the feeling of having him inside felt so good.