My Beloved Oppressor summary:

Annette Rosenberg, a descendant of the Padanian royal family and the only daughter of a military captain. After two years of dating, she married her father’s faithful servant, Heiner Valdemar. Everything was perfect. Until her family fell due to her husband’s betrayal. “You will be unhappy by my side for the rest of your life.” Annette suddenly realized something. This man’s revenge is just beginning.