Author's Note: Bored. Concept came to me in a chat.

Sherlock belongs to BBC.

=== DOOM ===

It took a while for John to figure it out- a whole year, in fact. He wasn't exactly Sherlock, after all. But once he pieced it together, John realized with a start that it was painfully obvious, stupidly obvious.

First there was Mrs. Hudson. She was a quick woman, often jumping to conclusions and being a bit clueless at times in her motherly ways. The first thing she had said when John first moved in was if they needed the secondary upstairs bedroom. John immediately caught on to what she was implying- that he and Sherlock were together, a couple.

Then Mycroft: "I'll be waiting for the happy announcement at the end of the week." At first, John was confused as to what Mycroft meant, because then he had thought that his best friend's brother was actually some sort of criminal mastermind. Later John assumed he had meant about Sherlock allowing John to be his assistant in his crime solving.

Angelo, though a slow-minded man in his eagerness to assist Sherlock fueled by gratitude, had called John Sherlock's "date", to which John corrected him by stating that he was not Sherlock's boyfriend or date, thank you very much.

Moriarty calling John a pet to Sherlock, though now that he thought about it, he wasn't entirely sure who Moriarty had intended to be the reciever of that statement.

Irene Adler, what an obnoxious woman to say so boldly and confidently that John was jealous, of her no less. John had denied the accusation thoroughly, against his emotions.

It never occured to John until Sherlock's excessive apologizing, which was odd to say the least, during the Baskerville case that there was more behind these implications of John's non-existant homosexuality than what he originally thought was the result of bad timing and appearances.

Because even though John denied with every breath that he and Sherlock were not a couple, never had been... Sherlock didn't echo these denials. He never corrected Angelo, never told Mrs. Hudson that it was obvious John would need the second bedroom. There was nothing he could do about Mycroft, nor Irene, and John was sure that Sherlock was as confused about Moriarty's comment as he was.

The conversation in Angelo's restaraunt also wasn't exactly conspicuous: in fact, John even asked Sherlock of he had a girlfriend. His reply: "Not really my area." So John assumed, for a moment, that Sherlock's compass pointed the other direction and provided the alternate question, before adding a reassurance that John wasn't going to ridicule him if it was true.

"I know it's fine," Sherlock had said. John had thought that Sherlock was simply stating that homosexuality wasn't wrong, at least to him. They never spoke of the matter again, and it had drifted from John's mind until now.

Furthermore, all the people that brought it up at all were people that knew Sherlock well, friends(of a sort) and family. So, what if their comments said as much about Sherlock as they did about John?

And at last, John figured out the puzzle with a small, knowing smirk on his lips. Indeed, there was no other option, and once you rule out the impossible, whatever is left, however improbable, must be true.

"What?" Sherlock asked, bringing John out of his reverie.

Well, this is a turn-around, John thought with a small chuckle. Usually it was Sherlock losing himself in thought and eventually being brought back to Earth by John asking him what it was he was thinking of.

"Hmm?" John asked.

"You were staring at me, and your eyes were unfocused: you were deep in thought. Then you smirked. You figured something out. What?" Sherlock asked once more, speaking rapid-fire as always.

"Why didn't you ever just tell me straight-out?" John returned. Sherlock frowned.

"Tell you what?"

"You're gay."

"I thought it was obvious."

"It was, once I thought about it. You're right, I need to think more."

"I am right, aren't I? I always am," Sherlock flashed a look of pride and arrogance that John knew so well, that surfaced usually when John praised him. "What took you so long to catch on?"

"Not sure. I suppose I was just too wrapped up in letting people know that we aren't a couple to realize that you never agreed with me or backed me up. And before you get any ideas, we are not a couple."

Sherlock gave John an innocent smile, the kind that meant trouble.

"Of course not."

=== DOOM ===

Lol John's slow mind is funny. Sherlock's suspiciousness is even funnier. Not exactly Johnlock but I liked the idea.

Reviews are welcome and rewarded.