I want to see Sherlock heavily pining and mooning over John, like whoa.
They could've probably been together, something was definitely blooming between them before Sherlock had to fake his suicide. He still hoped he would have his chance to get together with John after his return (bonus for virgin!Sherlock, who's totally ready to have both physical and emotional relationship for the first time in his life), but, sadly, that ship has sailed and John has got Mary now. And John loves her, so, later, Sherlock even excuses her actions after she very nearly kills him.
John learns about Sherlock's feelings (maybe it happens before the wedding after John asks him to be his best man). It breaks his heart that Sherlock is hurt because of him. At first Sherlock even hopes he can make John choose him over Mary. He tries. He even wants to change and be the way John would like him more. But John doesn't want him to change, he wants Sherlock to remain Sherlock; John just can't be with him the way Sherlock wants. So they go on like this. Sherlock is pining and heartbroken, and John is upset and feels guilty because of it.
When John leans about Janine (not knowing that the relationship is completely fake and is just for the case), Sherlock hopes John will at least be a little jealous, but while John looks a bit uncomfortable at first, he's absolutely not jealous. He's actually very happy for Sherlock, very friendly with Janine, and, to Sherlock's dismay, thinks that his previously pining friend has moved on. It couldn't be farther from the truth, because Sherlock is slowly dying on the inside.
Drugs, insanity, even character's death... Anything goes.
John/Sherlock. John/Mary. Unrequited love, heavy angst.
They could've probably been together, something was definitely blooming between them before Sherlock had to fake his suicide. He still hoped he would have his chance to get together with John after his return (bonus for virgin!Sherlock, who's totally ready to have both physical and emotional relationship for the first time in his life), but, sadly, that ship has sailed and John has got Mary now. And John loves her, so, later, Sherlock even excuses her actions after she very nearly kills him.
John learns about Sherlock's feelings (maybe it happens before the wedding after John asks him to be his best man). It breaks his heart that Sherlock is hurt because of him. At first Sherlock even hopes he can make John choose him over Mary. He tries. He even wants to change and be the way John would like him more. But John doesn't want him to change, he wants Sherlock to remain Sherlock; John just can't be with him the way Sherlock wants. So they go on like this. Sherlock is pining and heartbroken, and John is upset and feels guilty because of it.
When John leans about Janine (not knowing that the relationship is completely fake and is just for the case), Sherlock hopes John will at least be a little jealous, but while John looks a bit uncomfortable at first, he's absolutely not jealous. He's actually very happy for Sherlock, very friendly with Janine, and, to Sherlock's dismay, thinks that his previously pining friend has moved on. It couldn't be farther from the truth, because Sherlock is slowly dying on the inside.
Drugs, insanity, even character's death... Anything goes.