[Jack's probably not the best person to ask about being a normal person. Though he has been doing the happy thing with Ianto pretty much ever since arriving in the dome.
That's fantastic! [He squeezes her shoulder gently with a big, warm hand, always keen to communicate through touch.
At which point, the little bot hovering nearby decides that since they're already nice and close - hell, actually touching! - they might as well do something more while they're there. "Kiss!"]