Originally Posted by
Punisher007
^They've NEVER been portrayed as "buddy buddy" in the films. At best, they're colleagues who can be cordial to each other at times. But most of the time that they've interacted onscreen, it been to argue, bicker, and/or fight. And that's why the whole "so was I" lines that's meant to be really tragic/emotional falls flat, ESPECIALLY because they're drawing a comparison to Steve/Bucky's dynamic.
So either they're just going with the "they bonded offscreen" thing, which is a lazy cheat, or they're relying on the audience knowing the Steve/Tony dynamic from the comics, which doesn't work either because this isn't the comics and most of the GA wouldn't have read the comics anyway.