Peggy & Steve
"The Winter Soldier killed them," Steve corrected, his voice as sharp as his gaze was angry. "Not Bucky. To go after to him, to try to kill him because of something he had no control over?" Disgust and anger was clear and present in his tone and posture, because it was something he still wasn't quite over. But it wasn't directed at Peggy, and that meant he needed to get himself under control. It took a moment, but Steve bottled it up and kept focused on the mission at hand, squaring his shoulders and his jaw in the process. It was Captain America sitting beside her, not Steve Rogers.
"I had to choose between the shield and Bucky. It wasn't a choice at all." Stark had seen his dark side in that moment, but it wasn't something Steve would ever change, or regret. "Just like I'll always do what I believe is right, no matter how loudly someone else is telling me I'm wrong. Not when I know I'm right." Which had been something Peggy'd reminded him of, through her niece's eulogy.