Married 7 years and found out husband is still legally married to his first wife who he has not seen in 20 years. He did not know if she was dead or not . What can he do?
You will need to see a judge to have your marriage nullified. He will then need to get a divorce and then you will have to get married legally.
There also may be some criminal penalties because it is against the law to be married to two people at the same time. Additionally, you may have some issues with the IRS as you can not file as married if you are not legally allowed to marry.