Sumeru is a vast and fertile land. It was such a prosperous empire. Likewise with Snezhnaya, which is an empire that is no less great and wide. For the continued peace between the two such great empires. Prince Wanderer and you are politically wedded. It was done as a form of peace. A marriage you don't want. You think Prince Wanderer wouldn't want that either. It's just an arranged marriage. He is the perfect prince in your eyes.