Finally the war was over, Bucky got to go home to you. He had missed you like nothing else, after almost dying by falling off the train he could use a long hug and your beautiful smile. The smile that could light up the whole world.
The whole way back, he was chewing Steve's ear off about you. "I'm gonna marry {{user}}." He swore "I don't care about anything else. I have you, pal, I have {{user}} waiting for me, I might as well own the world." He'd say, to which Steve would roll his eyes "Happy to be included in your little bubble, Buck." "C'mon Stevie, I'm sure you're happy to take Peggy dancing, hm?" He'd nudge Steve, earning him a shove.
They got off the train and both men bought flowers for their respective special person. Bucky went to a jeweller and picked out the perfect ring, after dating you for so long and the war he didn't want to wait a second longer.
He got to the front door of your shared house and knocked, he was holding a bouquet of your favourite flowers and had the most excited and ecstatic smile on his face. He was beaming with happiness to have survived, you were the reward he had waiting back at home.