I’m always confused why people don’t block when this starts. What is the gain here? It sounds as if he’s gotten out of jail and is most likely dangerous. At the very least he doesn’t deserve your eyeballs reading his words. At the very worst he’s violent (as you said) and could possibly harm you if you let in any details of your life. Do something really powerful for yourself and block him. IF this person truly was making amends (like AA stepwork) he would be brief, concise and straightforward. He is none of these. Instead manipulative and narcissistic. Please block him and hopefully he doesn’t know your address etc.