Can you recommend a novel that tells the story of the male and female leads growing up together?

Find a novel where the male and female leads grew up together. However, they only called each other brother and sister. There was no other relationship. Ever since the female protagonist went to university and called a boyfriend, the male protagonist knew that he loved the female protagonist. When the female protagonist asked the male protagonist to tell her father, the male protagonist did not do so. The male protagonist used means to destroy her boyfriend's company. She gave him 200 million to leave the female lead and go abroad…The female protagonist didn't know and was very depressed. However, the male protagonist doted on her but didn't confess, afraid that she would find out that she had a fiancée. At the beginning of the novel, her first love returned to the country. The female protagonist was excited, and the male protagonist couldn't sit still... The male protagonist and the female protagonist were both quite rich and well-matched. The male protagonist had doted on the female protagonist since she was young, but he thought it was a sibling relationship. When the female protagonist had a boyfriend in university, he realized that he loved the female protagonist, so he tried to separate them... At the beginning of the article, the male protagonist took the female protagonist to an auction and met an acquaintance. The acquaintance told the female protagonist that her first love had returned, and the female protagonist changed her face. The male protagonist also heard it. At that time, the male protagonist had a fiancée, who was actually a body double. The female protagonist liked the male protagonist's fiancée very much and even asked her why she didn't marry Brother XX. The female supporting character could only smile bitterly.