It was not the comfortable quiet of a family that knows one another's rhythms. It was the quiet of people walking carefully around something on the floor that no one wanted to step on. Eric slept in the guest room, on the lumpy pullout couch where Carol stayed at Christmas, with the treadmill looming over him in the dark like a piece of farm equipment. He got up at five-thirty as he always had and went to work at the construction firm, where he was now a senior project manager with an office and a window that looked out on a parking structure, and he came home at six and ate whatever was put in front of him and helped Lily with her fractions. He was polite to his wife. That was the worst of it, maybe. He was polite, the way you are polite to a stranger in an elevator.
Tyler stopped speaking to his mother entirely. He did not slam doors or shout. He simply looked through her as if she were a pane of glass. When she said good morning, he took his cereal to his room. When she knocked on his door, he put in his earbuds. He spoke to Eric, but only in short, careful sentences, about rides and homework and whether there was any more milk, and he would not meet Eric's eyes. Eric understood, after a while, that his son was not angry with him. Tyler was ashamed, in some way neither of them could name, as if he had taken something from Eric by being born, and was waiting to be asked to give it back.
They told Lily a version of the truth on the second Sunday, sitting together on the couch in the family room in a row that felt staged. They told her that before she was born, before Tyler was born, Mom and Dad had been apart for a little while, and during that time Mom had been with someone else, and that person was where some of Tyler's body came from, his eyes and his hair, but that Dad was still Tyler's dad and always would be. Lily listened to all of it with a frown of fierce concentration.
"So Tyler has two dads," she said finally.
"Sort of," Melissa said. "It's complicated, bug."
Lily considered this. "Does that mean he gets two Christmases?"
Nobody laughed, but Tyler, sitting on the far end of the couch, made a sound that was almost a laugh, and Eric saw his son's shoulders loosen a fraction of an inch for the first time in two weeks.