I was at my gym one evening, everyone else had left already so I headed to the changing room but when I got there, two guys told me the change room was currently closed for cleaning and that I should use the swimming pool changing village. The only trouble with this was that the showers in the changing village are communal ones next to the pool. I had to catch a train home and I was very hot and sticky after my gym session so I definately wanted a shower.
No one was in there so I stripped off and started my shower. Next, I heard a voice saying 'sorry, this area is now closed' and turned around to see a girl in the leisure centre uniform looking right at me. I felt a bit shy about being seen but it was just another girl anyway so no different than being seen nude in the girls shower room. I said I'd be as quick as I can. She said she had come in for a swim before she left and I could take my time and invited me to join her for a swim. I told her I didn't have my suit with me but she said she never wore hers in the evening as the pool was empty and that I'd be fine as I was.
With that, she started undressing and was soon naked and walking into the pool. I thought 'why not?' and followed her in. It was great having the pool to myself almost and felt good to be swimming nude. This girl was very attractive and certainly not shy about stripping off. She was a couple of years younger than me but had quite nice boobs, which I couldn't help sneaking a peak at. As we were swimming I asked her if she often did this. She said that she did but not with anyone before and that previously she had liked to play with herself while sitting on the poolside.
Slightly surprised I told her not to deprive herself on my account. She swam to the tapered shallow end and lay back on one arm using her other to masturbate. I got so turned on by this that I soon joined her and pleasured myself to a thrilling orgasm. She told me that was beautiful to watch and I had to agree with her. I did get my shower in the end and went home very horny indeed.