You,Me and...Them!! (Harry Styles love story) fanfic

Madisson Payne is a 15,almost 16, years old girl and she's Liam Payne's sister. She lives with him, Harry,Louis,Zayn and Niall. She actually has a little crush on Harry but she's afraid of how her brother is going to react about her having a relationship with his best friend! Will she be able to admit it? Let's see!