"Oh, sorry, I was going to show you Jack's room, wasn't I?" he said guiltily, glancing about him. "There's a sitting room just down here, though. Come on."
He opened a door - yes, he'd actually found the right room! - and led the way into a cosy little snug with squishy chairs and sofa. And finally said, a little brusquely, "'Course I miss it. Why d'you think I'm so -" No, not obsessed with. "- pleased to see the Master alive? Or enjoying time with Jack so much? Well, there are other things I enjoy about Jack, but you know what I mean." His smile was wicked.