One goes from being the heir to a huge empire to marrying a princess in a foreign land; one goes from being a hostage prince trapped in a neighboring country to becoming the all-powerful controller of a country.
Childhood sweetheart? Love at first sight?
It's the enemy.
"Your Highness, you are well."
"Your Highness, things are different now."
Intention: In front of family and country, where should we put our emotions?