Maybe he saw her moving on and getting happy without him, and his pride or jealousy kicked in. He doesn't want to see her with someone else, so he decides to win her back. Another reason could be that he has changed for the better. He has dealt with his flaws that might have caused their divorce in the first place, and now he wants to show her that he is a different person and they can have a better relationship.
Well, in this type of novel, the plot might revolve around the female lead who has moved on with her life after the divorce from the billionaire. However, his sudden reappearance and attempts to win her back can create a lot of drama. There could be sub - plots about her new life, new relationships she might be in, and how she copes with his intrusion. Also, the billionaire's character might be complex, perhaps having changed since their separation and now determined to make amends.
Another theme might be self - improvement. The female lead may need to grow and change in order to fit into the billionaire's world, which could involve learning about business, etiquette, etc. Also, the theme of redemption could be there. Maybe the billionaire has some past issues or a cold heart that the female lead helps him to overcome.
Well, usually in such novels, it might involve the female lead discovering the hidden sides of her billionaire husband. Maybe he has a secret identity or some sort of double life in the business world or his personal relationships.
It could start with the heroine having her own independent life and goals. When she meets the billionaire, her world gets turned upside down. He might be used to getting what he wants, but she stands her ground. There could be a lot of emotional turmoil as she battles her own feelings for him and her determination to stay true to herself. Along the way, there might be other characters who either support or oppose their relationship, and through various events and revelations, their relationship progresses or deteriorates.
The female character is probably independent and strong - willed. Despite the accidental marriage, she doesn't let the billionaire status of her husband overshadow her own identity. The male character, being a billionaire, might seem cold and distant at first, but as the story progresses, he shows his softer side.
In the'my accidental husband is a billionaire novel', it's common to expect a Cinderella - like story. The female lead might be an ordinary girl who through some unexpected event becomes the wife of a billionaire. This sudden change in her life would bring a lot of challenges. She may have to adapt to a high - society lifestyle, deal with the media scrutiny, and at the same time, figure out if her relationship with the billionaire is based on true love or just the circumstances of their accidental marriage.
In this novel, the obvious main characters are the wife and her billionaire husband. The wife is the one who experiences the shock of finding out about her husband's double life. She's likely to be a complex character, with emotions ranging from love for her husband to betrayal when she discovers his secrets. The billionaire husband, on the other hand, is the enigma. His double life could be due to various reasons, and his character would be developed through his actions and the secrets he keeps. Additionally, there may be supporting characters like the husband's personal assistant. The assistant might be aware of some of the husband's secrets and could either be an accomplice or someone who is also in the dark. There could also be the wife's friends who offer her support and advice during her discovery process.
In 'the double life of my billionaire husband novel', the main plot could center around the relationship between the wife and her billionaire husband. She might start noticing strange behaviors from him. For example, he may disappear at odd times or have secret meetings. As she digs deeper, she uncovers his double life which could be full of mystery, lies, and perhaps even danger. This discovery would then likely lead to a series of events that test their relationship and her own strength and understanding.