I recommend 'The Villain Is Charming and Dangerous.' This novel meets your needs. After the female protagonist abandoned the male protagonist in her previous life, she got together with the scumbag. After her rebirth, she regretted the villain and helped him save him. The main character's love was sweet, and the female protagonist's actions in her previous life caused a lot of harm to the male protagonist. I hope you like this fairy's recommendation. Muah ~๐