And less permanent, she thinks.

It's the thing she doesn't say out loud to Bucky, or even to Steve. She'd made sure Pepper Potts knew, at the dinner party, but otherwise they don't talk about it, not really. She smiles, slight, and tips her head lightly towards Bucky and Steve. "Seems like things are becoming less complicated by the second, thanks to Tony's work."

For them, at least. And that's got to be enough of a win.