hello
It is hard to give advice because in the end you must do what is right for you!
Your A seems very abusive and if you have children that makes it twice as bad.
Follow your heart because you already know what you need to do!
As long as you give him what he wants you are an enabler! I say stop being afraid and allowing him to manipulate you. Take charge of your life and get some legal help if needed!
Love and many blessings