The girls, aged between 15 and 18, used brass knuckles, chains and beer bottles to fight over the lad whose name was not revealed.
The girls, from the Bulgarian capital Sofia, agreed to fight it out and skipped school to meet up in a local playground in the Gorublyane district of the city.
Several girls suffered minor injuries and dozens of passers-by reportedly witnessed the incident.
But the alarm wasn't raised until after the fight when a father of one of the injured girls called the police.
I must admit, I know how he must be feeling (c: