The Pull of One Magnet to Another 1/6

Title: The Pull of One Magnet to Another - Part 1
Rating: R (Sexual activities)
Warnings: Mention of animal cruelty.
Beta: Thanks to anarion who is always an inspiring plot consultant, and to omletlove who was an all-star beta, both for SPAG and plot; I couldn’t have hoped for a better beta, she’s amazing.
Pairing: Sherlock/John, with a tiny hint of Mycroft/Lestrade.
Word Count: 46 500 total, 6390 this part.
Summary: Mummy has arranged Mycroft’s marriage with an ex-army doctor. However, John meets Sherlock first, and sparks fly.
Notes: Written several months ago for a prompt on the kink meme, but I wasn’t happy with it at the time, so I gave it a huge makeover. If anyone from the meme is reading this, I want to thank you for your huge support. The title comes from the song I Was Married by Tegan and Sara.

If you're interested in the Russian translation, follow this link!
There is also some art (NSFW) and a video (I'm so excited!)l

( Part 1 )