Jack is never one to say no to a little physical contact, even if it's as innocuous as hand-holding. He gives Ianto's hand a little squeeze as it slips into his and gives him a wry grin. "That's very generous of you," he comments, because he knows he's being childish about this and really he deserves to be told off for it.
He takes a breath and lets it out again, ducking his head briefly before looking round to meet Ianto's eyes. "I asked Kitty to dance earlier on and she she told me no, in case Reid got jealous," he explains. "I guess I'm not used to be turned down."