1 Week Project

Why does the princess have to be saved by a prince? Why can't she be saved by another princess? Why does the prince have to save the princess? What if he wanted to go back to his other prince? Who gets to decide that a prince and a princess were meant to be? Can't the princess love the other princess, and the prince love his other prince? Can't the King and Queen stay who they are, while the princesses and princes love whoever they want?