Tell Me a Lie {A Niall Horan Fan Fic}

After Rosie experiences a terrible breakup with her boyfriend, Josh, she has no where to live with, with both her parents dead. Her only solution is to go live with her brother Harry Styles and his band. Rosie finds new love, old love, and more broken hearts. One secret haunts her -- Rosie is about to die. The doctors said she has heart failure and to live she has 3 months tops. Only time will tell if she will be cured. Will One Direction help? Please read, description sucks, story is better.