Sherlock realises that John's dating habits involve an unacceptable level of risk... what if he meets an unusually tolerant woman and ends up getting married?
Title: A Thousand Threads of What-Might-Have-Beens Author: wordstrings Fandom: Sherlock (BBC) Pairing: Sherlock/John Rating: NC-17 Length: 2:39:08 Summary: John finally does leave, and Sherlock is entirely unsurprised by it. And he clearly has two options: either get him back, or die trying.