Sang About Tomorrow
the first time sherlock understands sentiment. perhaps the only time.
Sherlock doesn't understand sentiment. He tries—honestly—but he's not made for feelings, as a Holmes and as a genius. No one understands this, for they are neither Holmes nor geniuses.
(all idiots the lot of them why can't they just observe why why why?)
Even with his homeless network (his lost boys and they call him peter pan sometimes when he's not looking don't they and sherlock never corrects them and doesn't understand why), Sherlock helps but he never cares for their total well-being. He's not their mother (not their wendy).
But then something goes wrong (a year after meeting John) and Janet gets caught in the middle, a red bloody hole in the middle of her abdomen.
Holding her wrist, John shakes his head gently.
Dead. Four hours.
They—John—calls Lestrade and gives the location and information. Five minutes too long, and he and his squad finally show. Without a word, John drags him home, sets him down on the couch with a cuppa, and sits down to read a book. Not a word is said all evening, and Sherlock has never been more grateful for silence.
(and of course he cries and of course john rarely mentions sentiment and of course sherlock never mentions this again because he is a holmes and a genius and doesn't do feelings)