It’s not the first time I’ve heard such a tale of role reversal and judgment turned into justification. When it comes to infidelity, like most things in life, human beings commit what social psychologists call the actor-observer bias. If you cheat, it’s because you are a selfish, weak, untrustworthy person. But if I do it, it’s because of the situation I found myself in. For ourselves, we focus on the mitigating circumstances; for others, we blame character.