They'd gotten comfortable, the two of them. In more ways than one. From the way that Balfour moved around the Hare and Hounds, collecting plates and cups and all else that had been discarded so haphazardly about the room, he might have looked like he'd been doing this his whole life. Like he belonged here, almost. He didn't even put on that deer in the headlights look when Clara touched him as he passed her. He stopped, of course, and smiled when she leaned against him, talking on of worker's rights, which he never had any clue about.
He must have said something in response to her. Must have. Balfour didn't have it in him to ignore Clara, and there was much to be said - fondly, if not teasingly - at her temperament, of how she could likely spark a revolution all on her own. But he had no hope of recalling the words that had just left his lips. Not a shred, with Clara's fingers at his chest, cold against his skin and pulling him closer, to where she relaxed back against the door. His own fingers tightened briefly around the edge of the plates in his hand, fighting the urge to let that usual rush of feeling force him to step back or straighten or make any move that might encourage her to let go. His other hand, naturally and without much thought, moved to cover her own; he'd always run hot, and there was no reason not to share his warmth on such a cold winter night.
"Mistletoe?" he asked, then, and glanced up, just briefly, to see what Clara meant. Ah. Of course. It was a wonder that Balfour could even feel the chill at all, from the way the usual blush spread across his cheeks and warmed his face. Returning his gaze to Clara, he managed a slight smile. Flustered and embarrassed and all of those usual Balfour Sutherland things that made him question why he ever said a damn word around her in the first place.
"Well... I wouldn't want us to have... any more bad luck," he said, sounding as though he were trying very hard to choose the right words. Taking his hand away from hers again, he moved to rest it against the door as he leaned in. Part of him was worried he was making a fool of himself. Maybe he was, maybe Clara, teasing and wonderful and cruel Clara, would push him away at the last second, bad luck be damned. But he'd gotten comfortable - and it was so much harder to pretend he didn't fancy her, now that they spent all their time together. Which she probably knew anyway, because she was Clara - clever and aware - and he was Balfour - obvious and unsubtle, even when he tried his hardest not to be. So he took the risk, in the end, vaguely dizzy and very overwhelmed, and kissed her.