Though There was No Vow (1970)

To save her father's bankrupt business, Eun-hui leaves her lover Ji-hun and marries Yu, a rich businessman. However, their marriage is working well. Ji-hun pleads and begs Eun-hui to come back to him and even threatens Yu to let her go. Yu fires a shotgun to Ji-hun, injuring him. As Eun-hui's distressed father has a serious car accident she returns to her husband, following her father's wish.