I can relate to your situation. My ex husband was the same way. He would spend our money and then blame me when the bills couldn't be paid. He would cheat on me and then say that it was my fault because I was too boring in the bedroom and he needed more. It took 12 years for me to walk away and I wish every day that I had walked away sooner. Do not waste your time on someone who does not wish to change and is only content blaming others for their own mistakes. Accepting that blame is only feeding his delusion that he is right, that he is entitled and it will not make him accept responsibility for his own actions. If there are children involved, make double haste. It is not just you being affected but them as well. If not for yourself, do it for them.