Don't know how to let go

I found out my husband cheated on me a few months ago. He left me recently and asked for a divorce. He said he wants to be together but he feels like he's not ready for commitment. I'm so heartbroken. I do want to stay together. I want to fix our marriage but I know I deserve better. I know I can't go back to him because after I found out about his affair, he became abusive towards me when there were other signs that was hinting that he was still cheating. I'm very dumb for wanting to fix us. I feel pathetic and stupid for still loving him. To still...want us. I don't know how to let go of him. Why am I chasing a guy who gave up on us..? Please give me advice on how to just let go of this and move on with my life. This is so hard. I've been so depressed. I'm broken and I don't know how to put myself back together. I can't seem to force myself to stop talking to him since at this moment, we're still married. If we were just in a relationship, it would be easier to force myself by blocking him. We built a life together so it's hard to just cut everything off immediately. We have no kids but I can't seem to cut ties till the divorce. Everything hurts and my heart feels so heavy.