[Tony turns around to see Bucky down on one knee]
Tony: Oh my God. What are you doing?
Bucky: Thinking about my future. I am deeply ridiculously in love with you. And above everything else, I just want to be with you forever. So Tony Stark, will you–
Tony: Wait, wait, okay? Just–I need to remember this. Give me a second.
Tony: No, no, no, no, hold on. Just–I need another second, please. I need to remember every little thing about how perfect my life is, right now, at this exact moment.
Bucky: [laughing] Are you good?
Tony: Yeah, I’m good.
Bucky: Tony Stark, will you—
[Tony kisses Bucky who then pulls back]
Bucky: Marry me?
Tony: Oh yeah, yeah!