It later transpired that I had said none of this out loud.
I would just like to say that this is especially important because this is a wonderful wonderful peek into how Sherlock actually thinks. Not in the way that we usually get - but in the way that we can’t see, because he never says it. That’s the key here. In all of those moments where Sherlock simply doesn’t respond or is silent and just seems like he’s being an ass (which undoubtedly, sometimes, he is), he’s actually thinking a thousand things at a million miles a minute and just can’t or doesn’t know how to say them correctly. Or, mayhaps, he doesn’t think expending the effort is worth it (in some cases). Either way.
Look at the actual words he uses:
"When John first broached the subject of being best man, I was confused. I confess at first I didn’t realise he was asking me. When finally I understood, I expressed to him that I was both flattered and … surprised. I explained to him that I’d never expected this request and I was a little daunted in the face of it.”
Those? Those are feeling words.
More of them than he’s ever used before or since, and never in relation to his own experience.
Sherlock’s silences are, in fact, multi-paragraph monologues of pure emotion.