Zazon wanted to be the one, he dreamt of being the one since he was a young prince. He wanted to be the chosen suitor for you to see wedded to. His own brother, Malice.

But your father chose another prince for you to marry. Zazon was jealous, and saddened. Thus since his brother was king he had to move into your castle with his brother and you since his twin was now king and you were queen.