EVEN IF he went to the police or the prosecutor, which is pretty unlikely even unto itself, if nothing more happened than you've said here there is EVERY likelihood that he was laughed out of their offices and told not to waste their time. He's blowing smoke, trying to get you upset, and he's succeeding. There's nothing to deal with until you're notified by the authorities that there is a charge against you, which is very unlikely to happen unless you have left out MAJOR parts of the story. Your life is not ruined. Stop letting him rent space in your head.