Write down what you're going to say. Keep it simple and to the point. Rehearse what you're going to say. Stick to the script, think of yourself as a boss and you're firing an employee. If he acts out, stick to the script and don't get caught up in defensive or accusatory behavior, you are the landlord. "It's not up for discussion" is one way you can help keep your boundaries firm. Don't use threats. And don't believe he will tell you the truth about anything. If he says the sun is shining, don't believe it, trust what YOU know, not what he says.

The first moment he gets out of line, don't wait for anything to escalate, call the police for protection. Tell the operator that you're afraid he's going to hurt you. Don't put your phone down, keep it in your possession. Open your door and wait, and run if you have to.

Use your firm, employer-like voice. Trust your instincts, trust your gut. Be an adult who takes care of herself. Stand up for you!

IMHO/JME, of course.