Mycroft was in an accident and has lost approximately six and a half years to retrograde amnesia. As far as he knows, his baby brother still lives alone in squalor as a junkie and Mycroft definitely doesn't recall being in a relationship with a certain DI. Beta read by Sherlock1110.

Sherlock y John tienen una gran discusión, o al menos uno de ellos lo entiende así. John abandona junto a Rosie el 221 de la calle Baker, nadie sabe su destino y Sherlock por primera vez en su vida se enfrenta a la difícil situación de vivir una pelea de pareja, quizás no tome las decisiones correctas. Por suerte Mycroft y Greg siempre serán sus ángeles de la guarda.

Sherlock knows before she ever says a word, but John remains obstinately oblivious about all of it-until one day he mentions it to his husband, and Sherlock grants him a tired look and asks if he really has to spell the whole thing out for him: their daughter has met a boy. Or: Johnlock, as parents. With an appearance by Mycroft, of course.