Aramis' gaze flits between them, whole body strung tight between the twin points of his stinging scalp and the building pleasure as Athos slides him through his fist. When he feels orgasm beginning to curl hot around his spine, he doesn't fight it, staring at Athos in wonder until his mouth cracks open in a joyful smile as he begins to spend, every new shuddering pulse punching another whimper from his throat.