Six months after the divorce, my ex-husband suddenly called to invite me to his wedding. I said, ‘I just gave birth. I’m not going anywhere.’ Half an hour later, he rushed to my hospital room in a panic…

Six months after the divorce, I never imagined I’d hear my ex-husband’s voice again. Yet that morning, as I lay in a hospital bed with my newborn daughter sleeping beside me, my phone buzzed. The screen read: Ethan Walker—my ex.
I nearly let it go to voicemail. Nearly.

“Why are you calling?” I asked when I finally picked up.

He …