Like I previously stated, they may not be together, but they still have ties. Trust me, I know that there ARE crazy people in the world, male and female alike. However, 97% of the time, there is still some interaction that will allow a person, especially women, feel like they still have something to hold on to. It's true, some people are crazy for NO DAYUM REASON, but more times than not, they have some reason behind it.
Aside from that, in this case, he GOT ANGRY when she pressed charges! Had it REALLY been over and she was just some crazy, deranged chick, 911 would have been on dial from the very first ding dong. She had time to ring the doorbell, knock on the door, bang on the door, rifle through the trash, throw bottle, bust out a windshield, and scratch a car.... ALL BEFORE HE CALLED THE COPS. Then after all this drama, he didn't press charges? Not even for disturbing the peace? Not even to set an exapmle that he is tired of her being a crazy "ex" girlfriend?
I was born AT night, not last night....