I was staying late at work and needed to wake up before the drive home. I went down to the gym. I arrived as Shelly did; we worked in different departments, but were on talking terms. I lifted some light weights and went for a run on the machine. Shelly and I talked, she commented on the weight I was not lifting. I went to change and she followed going to the female changing room. Shelly called “Do you have any soap?” I did, I walked pass the sauna that connected the male and female changing rooms. Shelly was standing just inside the female changing room, with a towel covering her tits. It was not a broad towel. She noticed my eyes run over her towel. She noticed the tent in my shorts. “Do you need your back washing?” I asked. She never missed a beat. “That would be nice.” She said. We were not going to be seen this time of night and I walked in. Shelly turned and walked to the showers. She stopped, turned and asked, “Are we going to do anything more than wash?” “May be.” “There are rubbers in the front pocket of the bag.” She told me, pointing to her green kit bag. There were, and shower gel. When I turned she had dropped the towel. I held up the shower gel. She smiled. “Two doors are such a short way to come after you followed me down three floors.” It was my turn to smile. I had not followed her, but I did follow her lead. There was not a soft surface anywhere. The floor would have to do. I took her on her towel. Shelly was relaxed, her body slick with salty sweet and her cunt slick with juice. I slipped in with ease. Her body was well toned and she knew how to use her muscles. Our bodies slipped over each other and I slipped up and down inside her. I came, and slowed to a stop. Shelly twitch muscles, I felt her cunt suck on my cock. My cock was growing again. “Again?” I asked. Shelly reached for a new condom, let me pull out, she pulled the used condom from my cock and tossed it into the corner of the room. Then she rolled a ribbed condom on to my shaft. I pushed back in, and started my work. This time she came, her body bucked and her firm muscles pulled against each other. I did not stop and she came again almost immediately. Then again so did I. This time I did not recover and we showered. Her olive skin shone in the filtered light of the shower cubical. Two days later I read a note in the gym asking people note to leave condoms in the showers.