"Sorry," Katie said automatically, glancing over at him. "I can't help it. I wish I could, sometimes, because I used to be so comfortable around you. You just..." She shook her head slightly and said, "You make me nervous. I don't feel like I ever know what you're going to do." Despite her tone, she smiled and chuckled softly. "I used to like that, actually, which is kind of ironic."