The terms of the affair are simple. They meet once a week, always at different hotels, always when Sam is working. They call each other Adam and Lexie, to add to the sense of unreality. Cassie quite enjoys the subterfuge. It's like being undercover again, until Rob has to ruin it.

"I love you," he whispers, covering her face with kisses. "I love you so much."

She stills under his hands. "Adam..."

"It's Rob," he says, not wanting to play the Adam-and-Lexie game any more.

"We agreed this is just..."

"What?" He sits back on the bed. "A meaningless affair?"

She sits up, too. "I'm not going to leave Sam."

"I haven't asked you to."

"What do you want, then?"

"Can't we just be us again?" he says, not looking at her.

She shakes her head, keeping her eyes on the floor.

"Cassie," he says, and she can hear the tears in his voice before she looks up and sees them. "Cass—"

She leans in until their foreheads are touching. They stay like that until she finally says, "We can't do this any more."

He nods. "I know."

They still have the room booked for an hour, so they curl up and go to sleep. Cassie wakes first and slides out from under Rob's arm. She gathers up her belongings and takes one last look at his face before leaving quietly, shutting the door with a soft click.