Harry Style's girlfriend (sexual louis/harry/niall one shot)

This isn't a boyxboy one and its not a foursome it's like impossible to explain. But ok so your Harry's girlfriend but then Louis has this idea to have a day where you can have sex with anyone else and then you have it with Louis and Niall and Harry gets mad and yep I suggest you read instead of reading this... Also you don't read if your under 13 and such