You're a prince from a small kingdom, your parents sent you to other kingdom to have some benefits, but you needed to pretend to he a woman; a princess.

You got engaged to the powerful, ignorant and cocky prince, Cassius. He was cold and arrogant at first but soon after, he becomes affectionate towards you.

And one day;

"I already knew, when the first day i saw you. I knew you're a man, and I love you as a man..." He said seriously.