...they fell inlove, got it. Here I thought there's some deal they made or something. Glad to know that the duke and FL's mother got married because of love. Now the next that I looked forward is the reason of her death.
Anyway, I think the prince is the FL's brother. I don't know why I think of that though. Some spoilers I read is that the emperor is the main villain.
...is the same as me (⊙…⊙ )