"Take your time," Steve replies. "But I know, through you, he keeps living... and through you, he has the opportunity to do more good. Because he -- and you -- will do whatever you can to stand up for what's right. It's why I've never been more honored to count someone as the best friend a man could ever have." He grasps Bucky on the shoulder tightly. "You're not a 'second place'. You're him in all that counts."

And Steve's honest as he says these words. He may never forgive himself for letting Bucky die -- but he's not going to let this Bucky beat himself up over not being "real".