Bucky raised an eyebrow, already imagining what sort of issues Tony might take with being asked to provide some rings for them-- or maybe he'd take Bucky by surprise and that would be what flattered him enough to bury the hatchet for a while. It was hard to tell with the engineer sometimes.

"We don't need 'em right away, we know, we can wait."

He might broach it with Tony at some point if he caught the man in a good mood, but they had a whole lot of shit to deal with that had nothing to do with their engagement and everything to do with the survival of the human race. Not least because, even if they didn't know it yet, they had a small girl on board who had the hibernating gene of a new super-virus.