He already had his wand out, however, and the problem solved.  He wasn't the sort of fool who carried loads up stairs on his own.  Manual labor was for Muggles.  The boxes opened with one incantation, and the books flew out through the air and sorted themselves onto the waiting shelves with another.   He glanced over at her, careful to make sure she didn't notice, and his messy veela was smiling in delight at the sight of her books putting themselves away.   He felt a quick surge of contempt that she'd be charmed by something so simple overlaid by traitorous pleasure that he'd made her smile.