I am appointed by a Billionaire to be his Heir's Girlfriend

Athena Vanderbilt is a wallflower, a shadow behind her bestfriend. But timid as she may be, she dared to do something no one would ever take the risk: to humiliate the popular Nate Van Warner, the heir of the richest man in New York. Now what would happen if Nate's father made a deal with her: 500000$/month to be his...