The Wives He Forgot

The Wives He Forgot is a 2006 film starring Molly Ringwald as Charlotte Saint John, a small town attorney, who comes to the aid of Gabriel Mark Humphrey, a handsome stranger whos suffering from amnesia. Charlotte cant help but fall in love with this seemingly perfect man. Their romance soon hits a snag when two women come into Charlottes office claiming that they are married to Gabriel, whos real name is Jay. When Jay is charged with bigamy, Charlotte decides to defend him in court.

Source: Wikipedia