No one should have known what was behind each door in the arena, but because of gold and woman's will, the secret came to the princess.
When the day of the trial came, the commoner looked at the princess for guidance of what door he should choose. She gestured to the right quickly so that no one but her lover would notice. The only question is, what was behind the right door?
But on the other hand, would she want to have to watch the love of her life get married. And live her life knowing her lover was with another beautiful woman.