My advice? Seperate bank accounts and a really thorough look within yourself to decide if this is the man you want to spend the rest of your life with. It's a choice. I wont talk about enabling because you are aware that you are.. what steps are you taking now that you know how much you are enabling him though? You talk about him stealing your money as if it's a fact and not something seriously wrong.
You might see an attorney. Unless this is all ok.