One possible theme is deception. The husband is living a double life, which means he is deceiving his wife and probably others around him.
Another theme could be power. As a billionaire, he has a lot of power, and his double life might be related to how he uses or abuses that power. For example, he may use his wealth and influence to keep his double life a secret.
It could be about a wife who discovers that her billionaire husband is leading a secret life. Maybe he has another family, or is involved in some underhanded business deals on the side that he has been hiding from her.
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.
One possible theme could be betrayal. The husband's double life is likely a form of betrayal to his family and partner.
One possible theme could be identity. The heiress is likely to struggle with who she really is when living two such different lives.
One common theme could be deception. The billionaire husband leading a double life implies that he is deceiving his wife or other people around him. Another theme might be power imbalance. His billionaire status gives him a certain power that he may misuse in his double life. Also, there could be a theme of discovery, like how the truth about his double life is gradually uncovered.
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.
The main plot could involve the wife starting to notice strange behaviors from her billionaire husband. For example, he might disappear at odd times or have secret meetings. As she digs deeper, she finds out he's living a completely different life, perhaps with a different set of friends, interests, or even a whole other family in the extreme case. This discovery then sets off a series of events, like her trying to figure out if she should stay with him or leave, and dealing with the emotional turmoil of feeling betrayed.
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.
In some cases, the discovery of the double life could lead to a big scandal that not only affects their personal relationship but also his business empire. The husband might lose his reputation and a significant amount of his wealth as a result. And the wife may or may not stay with him depending on how he handles the situation and whether she can forgive him for all the lies and deception.
In this kind of story, perhaps there are elements like his business dealings that are not what they seem on the surface. He might be involved in some shady or extremely competitive and cut - throat business practices that he keeps from his family. Also, there could be a whole other side to his personal relationships, like having a second family or a secret group of friends that are part of his 'double life'.