book title - SHE
based on tyler the creator's song "She" a boy is obsessive with a girl and wants her all too himself.
but in the book a girl and boy are obsessed with each other neither of them know that the other is obsessed with them both of them stalk each other social media's. their both in relationships but would do anything to be with each other. one night they both plan on killing each other's significant other neither of them know that the other is planning also. they end up meeting each other when the boy finish killing her boyfriend and is on the way back home to see the girl trying to dump his girlfriends body.
they end up dating but the police are also looking for them because of the murders. they're supposed to die at the end of the book but it could also end like how the movie "set it off" where they run away to another country change their look and identity and go on with their lives until the police catch up to from a phone call the girl made to her mom.
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you can tweak the story and plot however you want.
if you want a neater more in depth description of the plot pm me.