I love they all just kind of accept each of the other's quirks because they all (for the most part) know each other and have seen each other in action. And then here comes Bucky, who has been kept so apart from humanity for so long, and he just has no idea how to deal with these people. So he looks at Steve and he's like what? Because Steve is the only one he knows how to handle and trusts wholeheartedly. But he's trying, and this is why we love Bucky so much.
That one time where Scott Lang was literally every marvel fangirl everywhere. <<<I recently saw Paul Rudd speak at my university on being a part of Civil War and getting starstruck that he was in the same room as Chris Evans and RDJ.