Update: After I sent my husband the email stating that I did not want the divorce and would contest it. I wrote him a separate email later in which I apologized for my part in our relationship difficulties and said that I did not want us to become adversaries. Here is his response: "I appreciate the heartfelt message and the vulnerability you show in writing it. You do not need to worry about escalation or my ever becoming an adversary. With respect to forgiveness, let me say again there is nothing for me to forgive. However, if you think it helps, let's both forgive each other for whatever we may have done, said, or thought that hurt the other in anyway. I know that I have never intended to hurt you and believe that you have never intended to hurt me.
I don't have anything else at the moment except that you are entitled to and worthy of the feeling of being deeply loved every moment of the day and I am sorry that as a husband I could not give you that."
How do you think I should respond from a DB perspective? Do you think that there is hope?