Disclaimer – All characters are the property of the BBC and ACD and I am making no profit from their use.
John teaches him 'Good' and 'Notgood.' He doesn't teach Sherlock his strange language; the looks, smiles, touches.
Normal people do this, he learns from books and cases. This is a 'Good' thing. He tries a hug; it makes John smile. That is a 'Very Good' thing.
He likes being 'Very Good.'
Of course he wants this, he tells John when he asks. He wants to be 'Good,' wants to please his 'Friend' even though he doesn't understand the rules.
He never understands that there was a time when he could have said "No" and still been 'Good' in John's eyes.
A/N – And here is the reason I shouldn't go near challenge lists. The prompt was 'John always had the upper hand in their relationship,' and it is the only way I can imagine anything happening between them.
