Lately, sex with my girlfriend had become routine, and the excitement had started to fade, turning every day into a monotonous cycle. Then one day, I suddenly felt an urge to see her having sex with another man, so I decided to take action. To my surprise, I was overwhelmed by intense arousal, feeling my cock instantly harden. Witnessing her secret side—something I'd never noticed before—sent me into a frenzy, reigniting the same nervous excitement and thrill I felt when we first got together.