My question involves a marriage in the state of: Montana
I have a question about Common law marriage. If a person filled out and signed a affidavit of common law marriage only to qualify for health insurance thru the other persons work but never changed their name, had a ceremony or exchange of rings, did not register with the state, did not have the same bank account but did file taxes as married.Is it still valid and is there anyway to have it annulled?

