Nothing But Lies

It's about a girl knowing everything she went though was just a lie. She finds out she was adopted and she is related to two blonde guys. She doesn't know it yet but a big surprise comes to her as she finds out the secrets of her life. Her name Katherine and age 16. She is blonde with blue eyes. She has always felt alone in her life but know she is not alone. But who are these two blonde guys and why are they her brothers?