Power Couple

A girl is one day informed she is a princess and is rushed to the place in which she rules. She is shocked but it gets worse. When she arrived she meets her fiancé, that she didn't even know she had. Turns out she was arranged to be married before she was even born! She also,when brought into the royal family, becomes the princess of ice. The prince she marries is the prince of fire. But to the public they just rule the kingdom because they have the power ice and fire. So she if forced to keep her life basically a secret because of who she was forced to become.