Bucky + Peggy
There was a part of him that liked the fact that Steve could get jealous over him. Because he very easily had felt the same way. But he'd never tried to show it. And he didn't know why he felt like he wasn't good enough for Steve. Maybe it was his own fault for putting his friend on such a high pedestal. But how could he not? Steve was a good man and an even better friend. He had a wicked sense of humor. His heart was bigger than anyone else's and he had enough sass to send any catholic nun to an early grave. Steve had no competition and Bucky had made that very well-known.
So his reaction to finding out about Zemo was understandable. "Steve will always be first in my heart. And in my relationship. I've told him exactly that. And Zemo. Though I think Zemo's interest are purely physical when it comes to me." Bucky felt stupid as he blushed again. "Okay, it isn't his only interest. He could have killed me like he did the other super soldiers but he didn't."
He didn't blame Steve for not diving into the finer details. It was like pulling at an old wound. "There was an accident. Sort of. I wasn't actually there but a choice was made by Steve and Tony and the rest of the Avengers. In order to take down a bad guy, a lot of innocent lives were sacrificed. Zemo's family was part of that. He knew he couldn't go up against gods and super soldiers so he tried to pit them against each other. And he happened to find the one thing that would do it."
Bucky paused for a long while. He'd already told Peggy about Howard but knowing that Zemo had used her friend's murder as a way to take down Steve? Was it coloring too much of her opinion? But the story was already started. Holding back now would be pointless. "Tony hadn't known I was the one responsible for his parents' death. But Steve had. He ...didn't tell Tony because he thought it was kinder. When Tony found out, you can imagine how hard he went after me. Steve stepped in." His fingers fidgeted with the bottom of his shirt. "You could say it was my fault too for what happened. If I hadn't fallen off that train..." but that was in the past and he had to let go.
His nose wrinkled at the thought of sharing Steve. He'd said he wanted Steve to be happy. What had Peggy said? "Irrationally? Yeah, it makes me a little batty but only for a little bit. I know he loves and he knows I love him. In the end, it's still us."