A short description:
Lily is a teenager who saw her first ghost at the age of 5. When she was 10 she started a new school, and mistook a ghost in the classroom for a real person. Turned out that talking to yourself in front of other children was a bad way to start a new school. At least if you were interested in ever getting friends.
As a teenager, Lily’s best friend is a ghost named Julien. Unfortunately, Julien’s younger brother, Jason, is one of Lily’s worst bullies. He takes after his older brother, his role model, who died with a secret Jason would never understand.
One day in class, the first ghost Lily ever met reappears. He is sitting there in the front row, looking exactly the same he did when she met him at the age of 5. Only he can’t be a ghost because now everyone in class can see him as well.
E-mail me on grace.alice@mail.com if you are interested in taking a look and you can test it out. If you read the first chapters and decide you don't want to continue I won't be offended

Thanks!
Alice