A story about being ridden by a slutty, muscular woman with hard abs at the gym I frequent (SEVEN-005)

A few days ago, feeling depressed because my wife had left home, a friend encouraged me to try using a dating app. After registering as suggested, I quickly received a reply. Half-believing, I replied, and things went smoothly; we arranged to meet. She was a gym instructor, so I went to the designated gym, and fatefully, we bumped into each other again. Waiting there was my high school classmate, "Yuna." Wearing her gym clothes and covered in sweat, Yuna made me lose control, and we had sex in the shower after my workout. Back home, after calming down, I was tormented by guilt for what I had done. Soon after, Yuna called me out again. I went to the gym prepared, but what happened next was unexpected! I thought I would be scolded, but suddenly I was kissed! "It's all your fault!" she said, forcefully taking my penis into her mouth, making it instantly erect, while Yuna straddled me. The entire gym was filled with the mingled scent of our sweat. In the most intense moments I'd ever experienced, I couldn't help but ejaculate inside her. This was repeated many times, and she kept asking me to, so I kept moving until I ran out of semen.