I've got a certain love for serial killing partners (a love that follows me through fandoms but always goes back to the Sherlock fandom).
So my idea is that, before John went to Afghanistan, he killed someone and, while he didn't do it again, someone found out. That someone would be Sherlock who saw him commit the murder on a cocaine binge and he starts to become obsessed with the beautiful murder he saw. He begins stalking John, taking pictures, sending letters, and watching him sleep at night. John is freaked out a little but he gets used to it and starts wanting Sherlock when his feelings become more sexual. Sherlock even follows John to war (Discreetly of course) and continues stalking him till he starts sneaking into Johns cot while Johns sleeping.
They begin having sex a lot while his other squad mates sleep around them and this continues until Johns shot. They go back to London and they begin killing regularly together. The police figure there's a pair of serial killers working together and they try to find them.
Would prefer a "happy" ending , but do what you do.
John commits a murder before Afghanistan causing sherlock to see and begin stalking him, even following him to war (discreetly of course). Eventually john is invalided home and they end up being a serial killer couple and making London fall over in fear.
Johnlock Stalkig/Serial Killing Dark!John Dark!Sherlock
So my idea is that, before John went to Afghanistan, he killed someone and, while he didn't do it again, someone found out. That someone would be Sherlock who saw him commit the murder on a cocaine binge and he starts to become obsessed with the beautiful murder he saw. He begins stalking John, taking pictures, sending letters, and watching him sleep at night. John is freaked out a little but he gets used to it and starts wanting Sherlock when his feelings become more sexual. Sherlock even follows John to war (Discreetly of course) and continues stalking him till he starts sneaking into Johns cot while Johns sleeping.
They begin having sex a lot while his other squad mates sleep around them and this continues until Johns shot. They go back to London and they begin killing regularly together. The police figure there's a pair of serial killers working together and they try to find them.
Would prefer a "happy" ending , but do what you do.
John commits a murder before Afghanistan causing sherlock to see and begin stalking him, even following him to war (discreetly of course). Eventually john is invalided home and they end up being a serial killer couple and making London fall over in fear.