Which makes him simultaneously relieved and a bit homesick. Can't really remember the last time he didn't have his kind around him - or rather, it's not a time worth remembering. He kisses Ianto back, though a fair bit more restrained than he would've been had they been alone, before rolling his eyes at Jack and reaching over the counter to fetch a bottle and three glasses. Whiskey seems to be one of the strongest things binding them together.
"Only because I got nothing better to do."
Which is an outright lie. This is a night planned by the two of them, a way to casually ease into more fun things, entirely intentional and something he's been looking forward to all day.