Ianto catches his shoulders as he slumps against him, dropping to his knees and raising his hands to cup Jack's face. "Well done," He murmurs before pressing their lips together, drinking him in long and slow and deep. Their chests press together, and he lets Jack lean more fully against him, bare skin on rapidly wrinkling shirt, still rewarding him with slow strokes of his tongue and the gentle caress of his fingers against his cheeks. One hand detaches itself ever so slightly to wrap around his shoulders, still supporting him as he finally presses that button.