It was 11pm on a Wednesday night, and I had just returned from a long day of work. I was completely exhausted, so I decided to toss on some swim trunks and head over to our apartment pool to unwind. I really don't like wearing swim trunks in public, and I also dislike wearing normal clothes around the pool since they usually get wet. So I usually get naked, wrap myself in a towel, and carry my swim trunks in my hand to the pool. Usually since I'm alone, I just put the trunks on at the pool itself and then when I'm done, wrap myself in a towel and take the trunks off. Something about walking in public in only a towel with the risk of it falling leaving me stark naked in public also turns me on. Another important note is it was the winter, so it was about 40 degrees outside leaving the only option of going into the hot tub.
When I arrived at the hot tub there was a very attractive girl who had a similar idea and was already in the hot tub. I couldn't really make out how she looked since only her face was visible through the steam and bubbles of the hot tub. All I knew was she wasn't wearing any makeup and had her hair up with clip. Even in this state, she was quite attractive, so I could only imagine what she looks like in a normal environment. I was a little shy, so I decided to go to a corner and put my trunks on under my towel instead of doing it at the pool itself where she would see me.
I asked if I could join her, then we started talking all alone together. She came closer because it was hard to hear over the noise of the bubbles, and we didn't want to scream and accidentally wake up our neighbors. She came close to the point where she was sitting right next to me.
Now given the bubbles that were produced in the tub, I couldn't see anything underneath the water, so I could only assume what she was wearing underneath. As she got close by, my hand accidentally contacted her side and stroked upwards since I couldn't see her body. However, I was very confused. Normally, I would've felt a bikini of some sort along the side of her body, but all I felt was skin. Now I was really curious. What type of skimpy bikini was she wearing? Surely she came here with the intent that she'd be alone because who in their right mind comes to a pool in 40 degree weather at 11pm on a Wednesday. My mind started brainstorming different revealing thongs that could be present underneath. I had recently read about a c-string bikini which doesn't have anything on the sides and kind of clips onto the pussy. I was fairly certain that was what she was wearing. Just this thought was enough to trigger an erection.