How do I deal with an unruly ex?

Ok that wasn't helpful, heres my idea, you need to take charge, a girl going into the air force is impressive as always, which makes you look way superior then your **** up ex, if trying to work/talk things out and let him know whats over is OVER, consider this as a an offense, and get the cops in the situation, I bet he'll run his *** away. This question was hard for me to answer, Im gonna run away now.