It's not that she is heartless, it's just that she doesn't know how to love.
No one has ever taught her, not even her dearest and most beloved father.
A deal allowed her to get her revenge, but it also cost her her heart...
It's not that he's passionate, but that he can't help but love the most passionate woman.
Although a deal made him a bet between two women, it also made him realize what he loved.
If time could come back again, he would not regret this decision.