It's just as absurd as the whole idea of "If my spouse/boyfriend/whatever looks at another woman, he doesn't want me/isn't satified with me". I can't say that it's all silly though, half of marriages end in divorces, and sometimes guys will leave with signs that the wife/girlfriend doesn't recognize until too late. So, I understand why some of the wives feel threatened, statistics on cheating, for both spouses, are through the roof.