Smiles are tricky, particularly on detectives. It's either an epiphany or resignation. Now...

[ he reaches and gives roman's shoulder's a squeeze. the gesture is something peter's fingers seem to do on their own, too familiar for him not to do. he smiles, fondly, and it doesn't feel like a ruse or a game or a false... false anything. this persona, somehow, feels old, like softened up velvet. ]

Ease up, or you'll stick that way, then what'll you do when you're doomed to a life of terrible posture? Hobbling around like a little old man.