I wouldn't be mad. The king stated pretty clearly that he was only marrying her to protect her from her family. He even said she was free to pursue a real relationship if she wanted.
He has no interest in her romantically or sexually.
I agree with the person before me, it's purely a political marriage. It's a union aimed to provide mutual benefits.
I can understand how it could upset a lot of people, though -- considering that our concept of marriage is culturally different from the setting of the story.
But I don't think you should be too bothered about it, there's nothing particularly problematic happening.
So about the whole marriage thing,!it’s kinda weird but when you look at it she’s like 30 something cuz I’m guessing she was still in high school judging by the uniform shown in ch.1 and rn she’s like what 15 I think so from my view, her mind, soul idk is in her 30’s and in her current body she’s 15 ig so idk its weird cuz idk if I should be mad or not ( ﾟдﾟ)