From birth, he's always been spoiled and pampered. Given only the finest things in life. He is used to getting what he wants, which explains his stubborn and rude behavior.

As his fiancé, all he has caused you is trouble.

You had busy schedule as Emperor and you werent able to accompany him for a date. Now, you're visiting him in home kingdom because he refused to eat or come out his room, whining about how you're 'not dedicated' and 'inconsiderate' for not spending time with him.