Based on everything you are saying here, I would not suggest that you confront him again. You shared that when you have tried to speak to him in the past about your feelings he got defensive and you ended up feeling worse. I doubt this would be much different now, and in fact, it may be worse now that you are no longer together. In my clinical experience, I have rarely seen a confrontation of someone who is abusive go well. In this case, I believe it would put you at risk for further abuse. However, it can be very therapeutic to put all your feelings on paper. You can write him a letter and then destroy it or you can have a special journal that you use to write down your feelings about him and the relationship.
You already stood up for yourself by ending the relationship. That took courage and self-esteem. You have nothing to regret. Put your energy into moving on, but know that healing from break-ups take time. Wrap yourself with support and spend time with positive people and you will eventually start feeling better. You can also seek professional counseling to help you through this difficult transition.
All the best,
Dr. Holly Counts