Christian wasn't what you might call smooth. Let's not pretend otherwise. But he did his best to be charming, so.. that was something at least, right? He was indeed standing outside the door, but he did his best to appear at least vaguely casual as he leaned against the wall across from the Ravenclaw portrait.
It wasn't particularly easy, considering he didn't often do the dating thing, but knowing that Charlotte was interested quite certainly helped ease his mind. So when she appeared, he just smiled right back.
"Hey," he offered in return, nodding firmly. "Yeah, I'm all set."
So he gestured for her to lead the way downstairs, and as they made the way out onto the grounds, he did his best to make casual smalltalk, asking about her morning and whether she was caught up on homework. But soon they were outside, and that made things much easier. They had room to breathe, there, and it was a space where he felt more comfortable.
Considering the places she might like to visit, he tried to determine where they ought to start. "So I was thinking. There are a few places we could pick from for lunch. The tea shop is.. rubbish, frankly, but we could go round The Three Broomsticks - one of the pubs - for lunch if you like."