You are the best at convincing that.
When my wife had a steady boyfriend and I was out of town a lot on business trips I am sure she cuckolded at least 63 times a year.
This is inspired by an actual event. I am not much of a dancer, but my wife enjoys dancing a lot. So when we went to bars or parties and it was not unusual for my wife to dance with other men. Most of the time it was just harmless dancing, but occasionally the other men would flirt with my wife. Of course, I loved it when that happen. One night in particular this guy that my wife danced with was flirting with her on the dance floor and when he walked her back to our table I suggested he join us and I went and bought the 3 of us drinks. He had my wife danced several times that night and I continued to buy rounds for the three of us. By the end of the night we were all a bit tipsy, especially me. At this stage my wife had not actually cuckolded me yet, but we had talked about it a lot and she knew I was loving seeing her dance and flirt with the other guy. When we finally got ready to leave the bar my wife gave him a goodbye kiss that he will probably never forget.
Your wife didn’t care that everyone could see him hitting on her, and she doesn’t care that everyone will see her leaving with him.