All I have in my head right now is this scene.
Sherlock leaned back in his chair, bringing his fingers together, he had found no answers through his usual methods, and research had afforded him nothing. Frustrating as human contact was, he had no other choice.
“John, are you a homosexual?”
John, who was sitting at the dining table with a spot cleared away for tea, looked up from his newspaper, furrowed his brow, and then looked back.
“Sherlock, in response, I put to you another question: how long have we been dating?”
“Approximately 3 months 2 weeks and 4 days, why?”
“What I’m saying is, your question doesn’t hold much bearing with that in mind. “
“If you were straight.”
John turned to Sherlock, and looked him in the eye from across the room. “Sherlock, you are the only man I’ve ever been interested in, and probably the last person I’ll ever be emotionally invested in. I’ve accepted that my sexuality holds no bearing anymore, because I’m not leaving you.”
“So…you’re straight.” Sherlock said, obviously still confused.
“but it doesn’t matter, because you’re not going anywhere?”
“Yes, now for gods sakes stop googling such silly things on my laptop, my browsing history is making me think I have a split personality.”