Jack's eyebrows slowly climb upwards, as a wicked glint appears in his eye. (He can be so very easy to distract.) "Oh, you want sweeping off your feet, do you?" he murmurs, his hand on Ianto's back moving a little higher to between his shoulder blades; his hand holding Ianto's gripping a little more firmly. And then he's twirling them, pulling Ianto in close against him, and then twirling them again, until they're both dizzy and laughing, and then he leans in to kiss him.