My Wife's Gunslinger God (1970)

To Raphi, Nopphakao is a "fine lady," simple-minded and dull. He marries her at his mother's request only to please his parents. He thinks they can co-exist peacefully until the time comes for them to divorce. He's left in disbelief, however, when she turns everythings around and he's even shaken by the rebel. To Nopphakao, Raphi—or P'Phi—is her first and only love since girlhood. She can see that he tries to keep her within the limits he's set. A famed gaming god like her will employ every strategy to seize her husband's heart in victory. He mustn't learn her true identity, however, and continue to see her as a lady.