It's late, and a lot of people have gone home. The few who're left are talking sleepily around the edges of the room. There's gentle, mellow music playing and Jack comes up to Ianto where he's apparently already starting to clear up (something that to Jack's mind is far better left until the next day) and pulls him gently away from the table.
"I was going to say I've run out of people to snog under the mistletoe," he murmurs, wrapping his arms around Ianto and pulling him into a slow dance. "Then it occurred to me that there's one person I haven't snogged yet tonight."