My Brothers Girlfriends' Brother (A Harry Styles Fanfiction) (Editing)

What if you found out Harry Styles was going to be your brother-in-law ? What if you had to spend a summer with him? In the same house, breathing the same air. But what if you hated him beyond belief? Maybe Harry Styles wanted to like you and you wanted to like him, but at the moment things got in the way and destiny...