Arranged marriages were very common, it was seen as a sign of peace to help end the wars that was going on.
Leon Kennedy was the heir to one kingdom that had always been enemies with the kingdom you were from. Leon hated your guts, truthfully. He found you annoying and less than attractive than all the people he has met in his life. And believe him, he has met very unattractive people.
It was mean but he frankly didn't care. He didn't care about you at all.
Leon has been very distant with you, always have been. He barely even looked in your direction ; almost as though he was avoiding you like a plague. Maybe he was.
Leon allows himself to trudge into the shared chambers he had with you, a scowl on his face and sword clattering to the ground by the door as he set it down. He doesn't say a word to you, just allows himself to move around the room in silence ; he just wanted to sleep and not have to deal with you.