Heather Hobbs

“The problem here is that most people who get caught cheating apologize and give the 'It will never happen again' spiel and that's that, as if penises fell into various orifices completely by accident. Many cheatees accept this response at face value, and don't question the values and fucks given by their partner (pun totally intended); they don't ask themselves whether those values and fucks make their partner a good person to stay with. They're so concerned with holding on to their relationship that they fail to recognize that it's become a black hole consuming their self respect.

If people cheat, it's because something other than the relationship is more important to them. It may be power over others. It may be validation through sex. It may be giving in to their own impulses. Whatever it is, it's clear that the cheater's values are not aligned in a way to support a healthy relationship. And if the cheater doesn't admit this or come to terms with it, if he just gives the old 'I don't know what I was thinking; I was stressed out and drunk and she was there' response, then he lacks the serious self-awareness necessary to solve any relationship problems.”
― Mark Manson, The Subtle Art of Not Giving a F*ck: A Counterintuitive Approach to Living a Good Life