Billie Eilish Fanfic- Regret.

This is a sequel to Bully. If you have not read that please read it before you read this one. Just a recap: Cleo and Billie meet in high school when Cleo is a new student that Billie chooses to bully. They begin to date and overcome some obstacles with Billie's parents. They are doing well until Billie has sex with Cleo's best friend while they are on a break. Cleo begins to date an older girl named Heather who treats her really well but abruptly cuts her off when Billie demands to have her back. Billie is starting to get a following as she opens for Finneas' shows. Cleo goes on the mini tour with Billie as she opens and Cleo becomes close to Claudia. Cleo witnesses/catches Billie cheating on her several different times and eventually becomes fed up, going back to Heather at the end of the story.