"Held hostage by books," Severus chuckled, affection warm in his voice as he basked in one of Al's increasingly rare smiles. "I don't think I'll ever stop being amazed at the way your mind works."
He stepped up to Al and stroked some of that impossible mop back off his forehead. "I wouldn't mind if the Rampaging Books kept us in bed all day," he murmured.
Though, judging by the dark shadows under his eyes, whether he wanted to be kept in bed to make love or to sleep, would be anybody's guess.