My Girlfriend Was Already Fully Trained

"I shouldn't have looked at my girlfriend's phone that day." A friend shared an unsettling rumor about my girlfriend, Hayoung. "I saw Hayoung leaving a motel... with another man." I dismissed what they said, believing they must have misinterpreted what they witnessed. Yet, a part of me felt doubt about her. For the first time, I decided to check my girlfriend's phone... "What are you doing? Strip. Take off your bra and panties."