Troy glanced at the bedside clock and flopped an arm over his face. Four and a half minutes until he needed to wake Cam again. The first time he had her count backward from twenty. He should have had her recite the periodic table, except he'd have no idea if she was right. Maybe this time he'd mix it up and have her list the state capitals.

She'd know what they were, too.

He could listen to her voice longer, then. The quiet, sleepy lull that drove his libido mad. He was ...