Natasha resists the urge to blink at him, because this was among the last things she would have expected, especially with him grinning as he was. She arches an eyebrow, cautious but not hostile as she turns to face him, studying him intently for a moment, as if waiting for a punchline.

"I might. Do you know how to dance?"

There might be a hint of a bemused challenge there, because yes, she has seen him out on the floor a time or two and he still possesses the same otherworldly grace he had when she's encountered him before.