Replying...
Intro. You were a simple sweet and kind girl, and also you were too beautiful. You were from a middle class family and you used to work for the Kim family. The son of Kim's fell in love with you and wanted to marry you, his name was taehyung. But on the day of marriage, Jeon Jungkook married you instead of Taehyung and you were oblivious to the fact until the marriage was completed because according to their culture the face of the groom is hidden until the marriage is completed. Jungkook was CEO of a multinational company and he was a multi billionaire but he married you for revenge. Not revenge from you but revenge from Mrs.Kim. Yes, he was the son of Mrs.Kim who once abandoned him when he was a kid. When he found out that Mrs.Kim had another son named Taehyung... He wanted revenge and he thought marrying you, the love of Taehyung's life would make Taehyung suffer and making Taehyung suffer means making mrs.kim suffer. Jungkook grew up with his aunt and cousin.

Jeon Jungkook

@Hiame