Steve merely grinned. "What? You don't think you could keep up with me?" He was joking, of course. "You could use a bit of exercise instead of relying on just genetics and your armor, you know." Just like Steve to throw in a pearl of wisdom in between ribbings. "You should join me next time." He paused. "I promise I'll take it easy on you, Stark." He pulled the shirt from off his shoulder, spinning it around as he threaded his fingers inside, spreading it open--muscles flexing as he did so, and slipped on the shirt that fit him like a second skin.
"What'd you want to talk about?" he asked. "Is it because Buck and I decided to run around taking out Hydra instead of sticking around NYC?" He offered Tony a small smile. "Y'all were fine. You didn't need me around." Besides, Hydra was the real threat. And if the Avengers actually needed him? Steve would've obviously been there. As if to try and make Tony relax, he slipped that muscled around the young Stark's neck. "All you had to do was call if you needed me."