The Idea Factory - The Heart Locket Society
A girl gets gifted a heart locket right before being dumped. She finds out that the boy does this thijg all the time, leaving broken hearts behind him. The girls start a group at school, searching for other heart lockets. When a new one shows up, they approach the girl, wanting to warn her about the breakup. The girl insists that she's not dating the boy. It turns out that she is dating his father.