He laughed then, momentarily dispelling the tension knotting his stomach. If she was going to punish him for existing, she certainly knew how to make it as excruciating as possible-- spring it on him after he had finally relaxed around her, make him bleed out slower or something. Tony wasn't particularly enthusiastic about waiting for that to happen. It was like showering at Sal's with that broken pump, hot-cold-hot-ice-- he might as well jump in the pond.
Maintaining his smile, despite being unsure what the proximity meant this time, Tony kept his fingers threaded through hers to bring their hands up and press her knuckles to his lips. Whatever Fury expected them to accomplish, Tony knew it wasn't going to happen-- especially if Fury just expected Tony to get stabbed again for being such a nuisance. When he released her hand, he finally took the step back she had been pressing for, trying to step out of her orbit and break that connection before it broke him.
"We need you in top form," he started. We, not personal. "Messing around with me is probably detrimental to a healthy lifestyle." A glance to the door, I should go, stop letting me piss you off, we are done being personal. You just don't make nice with your assassin, Tony. Or try to kiss her.