Madame Aema 9(1993)

Original title: 애마부인 9

Aema is a bored housewife married to a successful, workaholic businessman. She begins an affair with Jean, a business associate of her husband's. Her husband suspects and begins tormenting Aema, while not letting on that he knows, to protect a business deal. Aema leaves her husband, but is persuaded to return after heeding advice from a friend.