BBC Sherlock- Friends never say goodbye

Sherlock has to sacrifice his friendship with John after Moriarty threatens to kill him. Sherlock decides the only way is to fake is own death but while he’s doing this he can’t help but think of his and John’s Friendship (Black and white clips are memories ;P) LYRICS:- There isn’t much I haven’t shared With you along the road And through it all there’d always be Tomorrow’s episode Suddenly that isn’t true There’s another avenue Beckoning, the great divide Ask no questions, take no side Who’s to say who