Well, if he's going to act like a kid, then Zemo can't help but point it out...

Although he is rather surprised that Bucky listened -- and went for one of the more unusual pastas on the menu. Impressive, really. Maybe he is opening up to new experiences more.

"That's not a bad thing, is it? You've gotten plenty of experiences you wouldn't have otherwise." He pauses, looking down at himself briefly, at the ring next--

"And so have I, recently."