Falling for the Army Doctor (A Johnlock Stor...
Sherlock loves John, overwhelmingly so. But it doesn't seem like John will ever reciprocate those feelings.
Takes place after season 3,
It has parentlock, and (of course) johnlock, There is no smut, so don't worry if that type of fanfiction makes you uncomfortable or squeamish,
Disclaimer: I do not own Sherlock, or any of the characters from the show. A few chapters have been inspired by certain things online.