My gym in central London has open showers - obviously closed at the moment. I have had many hot encounters. The showers are pretty private with 8 shower heads and a separate area for drying. Crowd is mixed and if there’s an old unfit guy, I usually shower quickly and go.
There’s a lot of hot and fit guys though and being fit in my 30s, I get a good share of attention.
I like the tension when someone joins the showers and you’re checking each other out. Signs are usually obvious - facing each other, soaping yourself and making eye contact before getting semi.
Before lockdown there was this hot fit guy in his 20s I had been showering with a few times but nothing ever happened but I suspected he was up for some fun. One night, I was alone in the showers and he joined me a few minutes later and took the shower next to me, a big sign of course given there were 8 shower heads. I was soaping myself facing the wall and he was also facing the wall and on the side of my eye I could see he was fully hard. He then turned the other side and I get full hard too and faced the other side too. Both standing there with hardons, I casually asked if he had a good work out and he didn’t notice I was hard, so he tried to hide his hardon. Of course when he saw I was hard, he showed his on full display and we had a casual chat on working out for a few minutes before giving a mutual wank. Hot encounter!