[Of course, what that does is just make Bucky smile at him, charmed in turn (it seems there's very little Art actually needs to do for that).]
Hey, I never said I play fair. [A soft laugh, as he reaches out with his free hand, first brushing away some imaginary dust on Art's collar, before moving to squeeze his hand lightly-- maybe it's a sort of thank you, or maybe he just felt like it, now.]