Can my ex boyfriend get charged for "assault" against me even though i don't wish to pursue charges?

Last night my ex got drunk and punched my friends car window and dented her car as well. But he didn't hit me or anyone else that night. The cops were called to report that specific incident, but today he is being charged with assault against me even though he didn't really touch me, he just gave me a slight push away, i even told the police on the scene that the push didn't concern me. I know he shouldn't have punched the hole in the window, but it seems like the are adding insult to injury with these assault charges.