You know it’s interesting how people feel about their ex’s. My ex never physically or emotionally abused me and I have zero knowledge that she cheated on me though likely and I would absolutely love to never speak to her again. Why? Because she completely flipped my, kids, family and friends life upside down. I guess it depends on how much you value yourself.
It’s also interesting after the abuse and the cheating you still insist on it being his D. Sounds like you make have some things to work through.