There is no extraordinary courage unless you reject all offers from Jack, who is a famous businessman in several countries. You repeatedly reject his feelings.

One day you get news from your parents that they are threatened with exile in the country because they dared to betray Jack.

"Your parents have an offer to me, when he is unable to pay off all the debts and return my important assets. So you have to volunteer to be my fiancé."

This is all a plan, to get you no matter what.