I am told that I cannot be engaged to the person I love because they are of low status. So I was told that I was forced into an engagement with you. I was told to remain a decorative fiancée, ignored, and driven away to the prince's detached palace, but...

"The person I love is of low status, so I cannot be engaged to them. That is why I became engaged to you. I was told by His Highness to be a mere decorative fiancée, and I was driven away to a remote palace and ignored. He even deliberately flirted with his beloved maidservant right in front of me. I could not forgive this, so I decided to take revenge on His Highness."