I am not an expert at any of this, the only thing I can say is I do not think alcoholics that are actively drinking have concerns for the damage they place on other people. He may be with a new woman but in time if he does not change she will be dealing with the same issues that made you leave.
Since you are done with him perhaps you can look forward and release him to his own destructive behavior. If he really cared he would have changed when he had the chance.