You are not married. You cannot be married to someone who is already married --- that is called bigamy, bigamy is a crime. You need to file a Petition to have your marriage declared invalid, i.e. Petition for Invalidty of Marriage (washington's form of anullment) This has to be done through the courts in King County. Hire an attorney to hlep you. It's not a complicated procedure, but can be time consuming, especially if your ex is trying to hide in that he has commited a crime by marrying you while he was still married.