Locker Room Showers at the Gym

My evening exercise happened to end up later than usual  that night because of work. The gym was largely empty except for a several women and two other guys. It happened that one of the women came and got on the treadmill right next to mine. As she stepped on, she looked me in the eyes via the mirror in front and explained that these were the new ones and she liked them. I said it was just fine as I continued my 5 mile run. I didn't mind. She was very fit and sexy. I'd spoken politely with her before and noticed her many times. She always dressed the same. A white jog bra on top, black spandex short shorts that sometimes let a little cheek peek out until she pulled them back down. As she ran, she had the grace and loping style of a gazelle that caused her good sized breasts to bounce up and down hypnotically. Many times her nipples would get stiff and some of the white bras let their dark color show when she sweated in them. She ran several miles so she was near me awhile. I loved watching her surreptitiously in the mirror or, if I was on another machine, from behind to see her tight little butt flexing. All of that had me half hard that night. The other women working out on the machines added to the effect as I used the weight machines, too. Our circuits coincided several times and we even greeted each other. The tight baby blue leggings one wore and the loose, gaping shorts the other had on showed enough to make my mouth water, even giving a glimpse of bare butt and thong under those shorts. When I finally left to the lockers, I held my sweat towel in front of me to hide my tenting semi hard penis. I enter the empty locker room, glad that I wouldn't be seen by any guys sporting a chubby. I undressed and grabbed my kit for the shower. As I walked to the communal shower room with my towel, though, I heard the water on and figured some guy was in there. I hoped he wouldn't notice my arousal but then I made the corner and saw him. It was a new guy, good looking and in his early 20s, and he was leaning out from the water from one of the heads and had thick body wash suds all over his front. Shockingly, his left hand was stroking his fully erect penis and his right hand was cupping his balls. I stopped dead in my tracks. I almost turned around to leave but wanted to go to bed not sweaty. Seeing him was making me harder because I'd been horny anyway and wished I could do what he was, plus it was surprisingly erotic. I decided to just shower on the other side. I went in and turned on the water. “Oh shit, man, sorry,” he said. I looked over and he had his hands held out like he was being arrested.  “Didn't think anyone was here.” I told him it was cool and everyone does it. He said he'd been staying with his sister and her kids so got no privacy so was, “way backed up in the old plumbing.” I answered that I could totally understand as I washed my hair, feeling uncomfortable because now I was almost fully erect. “Yeah, dude, I can see you got the suffering goin’ on right now too,” he said. When I turned around to face him, he was still washing his very soapy body. He was still massively erect but he wasn't looking at me. That helped me relax even though he was still talking. “Don't these women here tonight, like, look so frigging hot? I mean that one you were running beside is mega doable,” he said. I was washing my body when he grabbed himself again. “Man I'm so sorry but I got no where to bust a nut and I'm in a bad way. So like just forgive me,” he apologized. I was washing my groin just by coincidence. “Yeah, I don’t mind if you do it too man. And hey just sayin’ but you got a nice dick. Women must love you.” I rinsed off fast. I did not need to have anyone think I was jerking off in a public place and thereby end my career with an arrest. I hurriedly grabbed my stuff to leave just as he jetted stream after stream of thick, white cum across onto the shower floor right where I had to walk. He was not kidding that he was all backed up. I waited so I wouldn't get hit as I walked by. He milked the last of his ejaculation out and then opened his eyes. I stepped around the cum spatters and made my way out as he said thanks for not freaking and not to tell anyone. I didn't tell anyone at the gym but after a few more weeks I didn't  saw him there anymore. I couldn’t help but masturbate once I got home and I mimicked his performance of ejaculation onto my own tile floor as I came.