Strictly speaking, that isn't totally true because my wife has actually had at least two one-night stands with guys she met at bars. The first time was while she was on a business trip and was actually the first time she cuckolded me. The second time was several years later while she was on a ski trip. I have asked her if there were any other times she had a one-night stand, but she just laughs and says, "maybe".
@myheartinherhands