One day, after playing with my boastful girlfriend and friends until I was exhausted, I took a nap in the room. When I suddenly woke up, she was in a state of disarray, more erotic than I had ever seen, and in the middle of an act with a friend. In that situation, I was erect...!! With a hardness I had never experienced before...!! My beloved girlfriend was having sex with another man right in front of me, and without the courage to stop it, I was inexplicably excited by the sight.