This happened when me and my boyfriend were teenagers and had limited opportunities to fuck so we had to get in it anytime we could. His parents had a backyard pool and I came over one hot day to swim with him. I decided on a sexy red bikini that still covered enough to be appropriate to wear around his family.
His parents were inside working from home and we were alone outside. I began teasing him by rubbing myself down with a tanning oil spray. I made sure to caress my boobs and thighs as I rubbed myself down, making eye contact with him. He began getting hard through his trunks and got into the pool. I climbed into the pool and we swam around for a while, joking around and having a good time. His fingers would brush against my back and legs and I was getting turned on. I could feel my clit throbbing gently, aching to be rubbed. We would steal quick kisses, and I would brush my fingertips against the bulge in his swim trunks.