I Dress up as the Vicious Female Protagonist in the Book

I am the evil second female lead in the book. Various PUAs suppressed my twenty-four filial boyfriend who earned money to treat my illness. In the end, he cheated on the rich second generation and dumped his boyfriend. Unfortunately, the boyfriend is the male protagonist of this book. Later, he was saved by the heroine and founded a business empire. The ending of the book is that he killed me for revenge and the happiness of the heroine.