You

They grew up as neighbors turned friends.

They hooked up at the age of sixteen and fourteen.

She caught feelings.

He moved on to the next girl.

After a rocky divorce, she and her mom moved away to California. She tried to not stay in contact with any of her old friends, but that didn't last very long. Soon she knew exactly what he was doing.

A death in the family brings her back to Blue Island a few years later. Things go downhill from there for a while.

He notices her finally.

She fights off her old feelings for him, she's been brought up to date on his lifestyle now.

Title credit and partial inspiration: You by The Pretty Reckless.
Banner credit: myself. Images found on Google. I dont own them.
I own nobody famous, just original characters and story plot.