My Best Friend's Brother

There are the twins, Niall and Skylin Horan. And there are the other twins, Harry and Rosalie Styles. There are the best friends, Niall and Harry, Skylin and Rosalie. The two girls are best friends and so are the boys but all four of them are always together. Will their inseparable bond have a breaking point when an unexpected love puts a twist on things? Will Niall and Harry become, just Niall and just Harry? Will Skylin and Rosalie become, just Rosalie and just Skylin?