Of course I'm also put off by the idea that they have hated each other in the previous movies, because that's not what I see.
Me neither. Mind you, I don't think they have the close relationship in the movies they have pre Civil War in the comics, but then they can't, because no years and years and years of working together. Otoh I see clear relationship progress even within Avengers from the uneasy awkwardness to fighting comradery, and by the time AoU happens they're certainly good team mates who are relaxed enough emotionally around each other that Steve enjoys being teased by Tony. (Not to mention that Tony's ultimate nightmare is "Disappointing Steve".)
A case could also be made that Steve in between Avenger movies, i.a. as of Cap II, thinks of Tony still as "Howard's kid: like Howard, only more so" with a mixture of nostalgia and annoyance, depending Tony's behavior of the day, but my sole indication for that is that in Cap II, Steve refers to the Stark men differently, Howard is "Howard" (in the scene where Steve and Natasha discover the base) while Tony is "Stark" (in the conversation with Nick Fury early in the movie).
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Me neither. Mind you, I don't think they have the close relationship in the movies they have pre Civil War in the comics, but then they can't, because no years and years and years of working together. Otoh I see clear relationship progress even within Avengers from the uneasy awkwardness to fighting comradery, and by the time AoU happens they're certainly good team mates who are relaxed enough emotionally around each other that Steve enjoys being teased by Tony. (Not to mention that Tony's ultimate nightmare is "Disappointing Steve".)
A case could also be made that Steve in between Avenger movies, i.a. as of Cap II, thinks of Tony still as "Howard's kid: like Howard, only more so" with a mixture of nostalgia and annoyance, depending Tony's behavior of the day, but my sole indication for that is that in Cap II, Steve refers to the Stark men differently, Howard is "Howard" (in the scene where Steve and Natasha discover the base) while Tony is "Stark" (in the conversation with Nick Fury early in the movie).