You are no longer married, no matter whether your husband was justified in divorcing you or not. What difference will it make to either of you if we all said he didnt have a 'right?' The marriage is over and he has moved on and you need to as well. You will need to rely on God to be your husband now, and to provide for you. Not easy I know, I lived in debt for 6 years till I met my second husband, but God does promise to provide for all of our needs.
My husband and I are both divorced, through what our spouses did. No it isnt fair, but God can and does restore lives and give fresh starts and new beginnings. I was on my own for 6 years as a single mum, it was very hard, but if you live in regret and bitterness the only one you will hurt is yourself. You do need to forgive, and allow God to heal you and give you a new life. He has a good future for you if you trust Him and lean on Him. I am happier now than I ever was, and so is my husband, but it took many years, and its all Gods work.