Yes. Next time he starts threatening you (and yes, he was threatening), you tell him to stop and that if he is going to discuss anything it will be in the presence of your L.
He just doesn't like the fact that he can't control and bully you any longer.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.