He slid a bit further into the couch cushions himself, the long day once again catching up with him. But he was awake enough to respond to what he considered a challenge from her. "Hm, maybe not t'night - though I think you're perfectly charmin' - but what about the next Hogsmeade weekend? D'you think you could find time in your schedule then?"
He watched her carefully. He wanted her to say yes, but he'd thrown it out there lightly enough that if she said no, he could still play it off as a joke.