He is my only reason

Mia is the typical nerdy girl that everyone make fun of and even bully her. Her parents never want her, they say that she was a mistake. They abused her. She only have one friend, Ethan. One day she ran away from home and went to live alone in an abandoned place. She taught that she was alone and her life is over, that no one will love her, until she met Ethan again. What will happen when Mia will start to have feelings for him? Will she tell him or will she keep it for her to avoid losing him as a friend ?