Let me in. (Robert Downey Jr Fanfic) Complete

Meet Emilia Knight, a lonely 23 year old girl who works as an assistant in a movie production company. She struggles to see if there will be a bright future in store for her or if she'll always be this sad and lonely girl, feeling lost, deep in her thoughts that involves her past.
Then one day at work something unexpected occurred that will change her life forever in a drastic way, not even sure if she'll like it or not.
She meets Robert Downey Jr. A 30 year old world famous actor who instantly falls for her. He finds Emilia quiet complicated and mysterious and made it his mission to be a part of her life.
They have a constant on going push and pull relationship full of ups and downs.
But because of her dark, painful and secretive past she isn't sure if she'll allow someone to be that close to her. Always taking a step back when he takes a step forward. She's scared of being hurt and to hurt.
How will their relationship develop and how will they deal with the heart shattering obstacles that will be thrown on their paths?