Last year she slept with 4 guys that she admitted to me. No idea if it was more.
This based on an actual event. My wife was pretty much the opposite of a flirt and if a guy even tried to flirt with her she would quickly deflect his advances. However, a few years after we got married I started telling her about my cuckold fantasies and confessed that it really turned me on when guys flirted with her. Gradually over the next several years she became more comfortable when guys flirted with her. We would always talk about it when guys flirted with her and I always encouraged her to flirt back and eventually she began flirting back.
While you chatted with your friends, your wife pulled him to a quiet corner of the bar. She had to kiss him and didn't care if she got caught.