The Wives He Forgot (2006)

When a man, beaten and bloody, stumbles into the law office of Charlotte, she discovers that he has amnesia. She takes him in as a guest, hoping that his memory will recover once his wounds heal, and the two fall in love. But everything changes when his wife comes to get him. When another woman comes forward claiming to be Jay's wife as well, he's put on trial for bigamy and Charlotte has to defend him.