After Liam dropped Sophia and me back home, he returned to the office. I dozed off before he came back, but half-asleep I heard him moving around the room. I waited for him to climb into bed beside me. When I opened my eyes minutes later, his side was still empty.

I made my way downstairs and found him in the living room with Sophia. She was stretched out on the couch, the TV still playing in the background though neither of them paid it any attention. They were deep in conversation, Liam’s ...