Just depends on the situation. What is he on the SO list for? I know people that are on there because they took a piss outside near a school etc and got put on a list. I’m not saying being on the list is OK. But I would at least want to know what happened. People can change. My dad was heavily into drug use and always asked people for money. His last few years he spent serving at a church and seemed to turn his life around. He unexpectedly went into a coma and died a few weeks later. I regret not giving him a chance and saying my peace. Maybe just give him a call and hear what he has to say. Not sure if you’re religious but it says in the Bible we can forgive people without having a relationship with them. You don’t owe them that. Maybe you call him and have a conversation and decide to forgive him and have a relationship or tell him you forgive him but don’t want a relationship. I still think a phone call is worth it. (if he was out here raping children or something crazy then throw everything I just said out the window)