You dreamed of a marriage where each made the other supremely happy. Now one of you has walked out. Separation is not the time to capitulate. Your dream can live again. But not without work – work that will demand listening, understanding, discipline and change. That work will likely involve the help of an outside counselor; someone who can help you think, evaluate, and reach out for God’s help.
I know you’ve tried before, but sometimes things have to get worse before they get better. One of God’s great gifts is the gift of choice. It is extremely important that you make the right choices. Don’t go it alone. Reach out to a pastor, a counselor, or a friend. There is hope for the separated.