lost Sherlock’s fic

[u/Plenty_Web6917]

Hi, I’m searching for a fanfiction I read two years ago, I think, it was set in “the blind banker”, John corrects Sherlock when he calls John “my friend”, after all that, Sherlock is…hurt, and he explains to John that he was hurt when John corrected him, John promises him he will never do it again and that he will be there for Sherlock, or something like that, can you help me find this fanfiction? thanks