Forever together or Forever forgotten? (BoyXboy) One Direction

Niall Horan a 17 year old from Ireland moved to London a year ago, since then he made two of the bests friends, Louis Tomlinson a 18 year old, he got kept down, he says its because of his sassyness but we all know that's not true, he was originally from Doncaster, he moved to London when he was 10 & then also Perrie Edwards a 17 year old originally from Bradford, she moved to London when she was 15, they tell each other everything, but Niall has a secret that no one knows apart from Greg, Niall knows all about Vampires, he is a Vampire Hunter, they killed his parents when Niall was only 10 & his brother 15, Greg; his brother & him were out with friends that night & when they came home the next morning their parents were dead and they knew what happened, Niall ended up finding Josh Devine, he was a vampire hunter and Josh ended up teaching him everything he knows, when Josh got killed 6 years later, Greg and Niall decided they need to move, so when Niall finished year 11 that year they moved to London.
Liam Payne, Zayn Malik & Harry Styles are Vampires they are all 18 and have been for over 100 years, they were all best friends when they got turned, they were all originally from Wolverhampton, they have been moving around a lot but decided to stay in London for a while, what will happen when Liam, Harry and Zayn meet Niall, Lou and Perrie, will the vampires end up falling for the humans or will they just kill them, will Niall kill the vampires or fall for one of them...