I AM LAUGHING SO HAAARD
It is your complete lost, Your Grace.
Maaan, she looks at him like his younger brother. HAHAHAHAHAHA.
THAT THUMBS UP.
HAHAHAHAHAHAHA.
I REALLY LIKE THIS MANHWA I KENT
This whole thing would be solved if 1) the duke or his assistant knew that the servants all though the the duke already had a mistress or 2) the FL confided in anyone of her maids or the assistant that she though the duke already had a mistress and that she saw herself as a temporary wife of the duke's. The key to any good relationship is communication and that is what is lacking in this story.