Oh, that sound is something that Porthos wants to hear for the rest of his life. He grins and holds him a little tighter, his fingers stroking over the bare skin that's available to him. "He's good at that, isn't he?" he murmurs. "The way he touches, the way he works, that look in his eye. He's never more beautiful than he is when he's like this," he narrates, smiling fondly down at Aramis from where he's lying prone, holding Athos back.