Yuka was the girlfriend I felt lucky to have: beautiful, shapely, cheerful, and popular with everyone at our workplace. I admired how easily she got along with my obnoxious middle-aged boss, my close coworker, and the new hire—until I learned she had been fucking every one of them. While I worked nearby, she happily slept with the office men as if it were nothing. I wanted her to resist and hated seeing how much she enjoyed the sex. I should have been furious, heartbroken, and miserable, yet my cock only grew harder. “Sorry I cheated,” she tells me. “But why is your cock getting bigger?”