He might. He's never been the sort to try to embarrass someone doing their best.

"Well, that's my mind at ease, then. Thank you," he replies, drawing her out onto the dance floor. He may not be a perpetually-young super-soldier anymore, but a lifetime's worth of grace, agility, and even confidence have let him become an excellent dancer (Jarvis also helped), who leads without pushing, making the steps themselves a partnership, a conversation. "It's quite the impressive costume you've put together, too."