Looking for a book. Dont know name.

📖 The Plot Breakdown
The Betrayal: The story follows the Female Main Character (FMC) who attends her husband’s high-profile company gala. During the event, she wanders into the venue's garden only to catch her husband actively cheating with his coworker/assistant.
The CEO Steps In: The company's powerful CEO also witnesses the act. Disgusted by the husband's behavior and recognizing the wife's worth, the CEO steps in immediately. He uses his massive legal and financial resources to help the wife secure a swift, victorious divorce, stripping the cheating husband of his company status.
The Karma: After the divorce, the husband tries to make it work with the pregnant coworker. However, the coworker only wanted his money. Once she gives birth and realizes he is broke and ruined, she abandons the baby boy with him and vanishes, leaving the ex-husband miserable and struggling as a broke single father.
The Happy Ending: Meanwhile, the wife and the billionaire CEO fall deeply in love and start dating.