At the end of tfp, Sherlock says, “You killed my best friend”, while crying. This could be referencing the fact that John really is dying because he got shot in tld. Victor Trevor is a mirror for John, and John is Sherlock’s best friend. They made a huge deal out of establishing them as best friends in tsot. I don’t think they would use the term again if they weren’t making a connetion between them. So if tfp really is happening in John’s mind bungalow, he’s imagining Sherlock getting upset over his possible death. end meee nowww
But like imagine one night, months after the end of s4, Sherlock is feeling exceptionally depressed, and he ends up texting John at like 9 at night, and it just says “I miss you” and he waits and wait, but John doesn’t reply, and Sherlock feels so stupid for thinking he would be missed in return, so he just crawls into bed and shuts his eyes and tosses and turns but eventually falls asleep, and when he wakes up he’s not sure what’s woken him, and he peers at the clock to find it’s only about midnight, and then he hears a sound, and he turns around, shocked to find John toeing out of his shoes and climbing into the bed, and Sherlock can hardly breathe let alone say actual words as John scoots into his space, warm and solid and real, and wraps him up in his arms and lets out a long breath and murmurs against his hair, “I missed you, too.“
Imagine John moving back into Baker Street with Rosie, and he’s nervous, God he’s so nervous but he’s not exactly sure what for, so he tries to make this awful self-deprecating joke, trying to make it better, but all the while sure he’s making it worse:
“Sorry. Um. I guess things will be a bit more-um- inconvenient. You know for- for cases and…”
John’s voice dies at the sight of Sherlock’s wide eyes. He glances down at Rosie sleeping in the cot, his mouth trembling just a little, then looks back up at John.
“But- John. I- I love her. She’s… she’s part of our home. How could I not?”
The tears are sudden, and take John himself by surprise. He quickly covers his mouth with his hand to try and quiet them, chokes out, “Th-thanks, Sherlock.”
And Sherlock steps forward and pulls him close. “Oh, oh, John. My…I- I thought you knew. Ssh.”