I Broke Off My Engagement Then Got Married

“I love a woman other than you. So break off the engagement with me, Reubellina.”
For ten years, Reubellina has stood by the side of the powerless Second Prince.
But her love was cruelly trampled on the day of their supposed wedding announcement.
Worse, this shameful incident was discovered by someone.
Tartenon Speraum, the Iron-Blooded Grand Duke of the North!
Reubellina begs him to keep it a secret, but he offers her one condition.
A 3-year contract marriage.
And so she went to the North, cultivated the barren land, fixed the chaotic internal affairs, and dealt with the corrupt nobles.
She did everything she could. She thought all she just had to do was leave now.
“Divorce? I don’t know what you’re talking about. Our contract period is not over yet.”
“There’s one day left. I wanted to tell you in advance… … .”
“I’m sorry, Reubellina. I had no intention of letting you go. From the beginning.”
[What? Did I hear wrong?]
“Don’t even think about running away. You’re already mine.”
[Excuse me, Grand Duke. Why are you obsessed with me?]