I Love You Halfie

This is a story of a billionaire fell in love with his personal assistant. Their love story lighted when Alexander became attracted to Ann's intelligence about technology, so he thought she would be useful for him and his tech company. As they moved on with their business life, Alex's family troubled him to get married while Anne dying father asked her to make him happy by getting married; so they made a contract marriage.
The deceptive love relationship turned out to be a real one. Alex being a half demon half witch, he was pursued by powerful beings all around for revenge and then Anne usually got out in his place while Eugene always treated her wounds with his vampire magic;he was Alex's best friend. Finally, the real truth booms out that Alex was the real murderer of Anne's mother and the once unbreakable bond between them shattered.
what would you do if you were the heroine in this novel? Read the book and tell me in the comment section.