At 2:47 a.m., my husband texted me from Las Vegas: “I just married my coworker. I’ve been sleeping with her for eight months, and you’re boring and pathetic.” He expected me to cry. Instead, I replied, “Great,” and opened my laptop. By sunrise, I had canceled all his credit cards and changed the locks on my house. I simply cut him off completely. But the real shock came when…

“Well,” Sarah stammered, instantly defensive. “When you phrase it like that, you sound incredibly selfish! Marriage is supposed to be about forgiveness!”