While my husband was in the shower, his phone lit up on the counter. My son looked at it and said, “Mom… why is Dad texting Aunt Lisa, ‘I miss last night’?” I thought it had to be a mistake—until I read it. When I asked Lisa, she broke down and said one word: “Sorry.”

‘The phone vibrated twice against the kitchen counter, a sharp, insect-like buzz that sliced through the usual hum of a Tuesday evening in Columbus, Ohio. Emily Parker stood at the sink rinsing dishes while her husband, Daniel, showered upstairs after arriving home late. Their thirteen-year-old son, Noah, sat nearby working through algebra problems, one earbud in, half-absorbed in music.

The …