The Male Lead’s Villainess Fiancée (Ryu Heon)

In a romance novel called "The Secret Lovers of the Academy" the male lead would often torment his fiancebut wait, why did she cross into this world to become his fiance, the villainess, instead of the heroine? Louise Sweeney found the perfect solution to escape the misfortune of being the villainess: "Your Highness, I just want to tell you that we don't have to be tied with our engagement. We weren't even officially engaged, right?" But what was wrong with the male lead's reaction? To her suggestion, he replied "But our engagement wasn't false, don't you agree?"