Middle-age women who cheat on their husbands are looking for passion and
 sex, but don't want to divorce their husbands over it, new research 
suggests. "People will often say that infidelity
 is a sign of a deeper relationship trouble," Anderson said. But that 
storyline largely comes from the therapist's couch, after a woman has 
gotten caught cheating, he added. "When you get caught doing anything that is highly stigmatized, you make excuses. The excuse becomes, 'Well my husband doesn't treat me 
well, oh there's a problem in the relationship''.
-Business Insider