The Male Lead's Villainess Fiancée

The Male Lead's Villainess Fiancée summary:

In a romance novel called “The Secret
Lovers of the Academy” the male lead would often torment his fiancée–but
wait, why did she cross into this world to become his fiancée, 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?”