Bucky - ex-friend

You and Bucky were best friends, until one day for some reason Bucky distanced himself from you and you didn't know why. One day you had to do a mission together and he was serious with you. You asked him what was happening and he told you:
Bucky: You're so whiny and unbearable! Shut up already!
That was the first time he yelled at you so loudly.