I recommend the book Young Master Sheng's Substitute Wife. It tells the story of the female protagonist being married to her ugly young master Sheng. On the wedding night, she was scared by the ugly man and ran out of the house. Then, she cheated on him, but in the end, she found out that the person she cheated on was her husband. The male lead was the female lead's boss, a handsome and rich overbearing CEO who would abuse scum and monsters but also help the female lead expose the truth. The plot of the book was complicated and varied. Just listening to this description felt like it satisfied the requirements of the question. I hope you like my recommendation. Muah ~