"Maybe. I've heard that when some people get a song stuck in their head the only way to get it out is to listen to it again. So maybe this is like that."

The realization of what he had done only sank in after he curled his fingers around hers a little. But he couldn't very well pull away, that would be terribly rude, so Zack accepted it.

"Don't worry about it. Just think of it as you having an off day." He paused. "You...do have off days, don't you, Cissnei?"