Didn’t I watch a terrible children’s movie about this? Also, haven’t all of these couples broken up.
Also, we all know its Nat and Bucky’s kid and Steve took responsibility for some stupid ass noble reason.
Well, technically, they only say “Black Widow and Captain America” and Bucky has been Captain America for whole stretches of time.
So it could totally be Bucky just as written. Edit: Yes, I’m an idiot and didn’t notice the last name. So sue me. In my defense, Nat and Bucky are so interwoven in my head that I cannot IMAGINE Steve stepping in on that. 8)