The Paradox Series is a very popular series of Sherlock/John stories by wordstrings that explores the ups and downs of a romantic relationship where one partner is a genius sociopath. The series is ongoing, but each story can stand on its own. 24,386 words
This series is ultra-introspective and Sherlock thought process intensive. All the strange and odd musings that "normal" people wouldn't think or want to think about, but oddly, I found myself in many of them and those that I didn't I found the reasonings completely understandable. Not logic precisely, but innate curiosity to an obsessive degree.
But this thought, this one here is perfect:
It's in knowing that a particular prize is worth more if garnered by some means than by others.
I recommend this series for readers who adore the maze of Sherlock's mind.
After an experiment gone wrong, where Sherlock dies for a few minutes, John becomes angry and leaves. More off the wall behavior from Sherlock, he loves John and is consumed by him in his own odd way.