He'd have backed off in an instant if she'd indicated she wanted him to and cracked a joke and let it slide by as if nothing happened. But instead she leaned forward, and he ducked his head just enough to kiss her lightly, softly, lingering for a moment. His breath definitely caught, and his arm tightened around her just slightly, but he didn't press for more. He pulled back after a moment, flushing faintly as he realized he probably shouldn't have done it, but he didn't regret it, unless it was going to make things awkward with her. It had been an impulse, and though generally he wasn't an impulsive person, he had followed it this time.