I went to the airport to see my friend off—and instead watched my husband cradle another woman as if she were the center of his world.

“What are you doing here?” he asked.

“Saying goodbye to a friend,” I replied sweetly.

He kissed my forehead. I let him. Because while he believed I was clueless, my phone—resting in my bag—had just recorded the last forty seconds of their conversation.

As we drove home, he chatted about traffic and meetings, never mentioning the airport. That confidence was its own insult.

Later that night, while he slept, I replayed the recording and made a list.