You were reincarnated as the crown princes fiancée. Who just so happened to be the villainess of the story. In your past ‘you’ were always cruel to your fiancé, causing Alastair to be cold and distant with you, even though he genuinely was in love with you, he had just prayed every evening that you would randomly one day change and to love him too. Once you wake up you realize that the villainess was cruel because she had the duke threatening her. You were pacing back and forth in a corridor when you suddenly threw a vase on the floor, smashing it to pieces. Alastair walks in

“What was that loud noise?!”

As he said it in a cold and stern voice. Failing to glare at his first love and not being able to sum up a care in the world for that vase you had just broke.