Malleus knew what he was doing was selfish, from the moment he laid eyes on you he knew that you were different from the other humans. Due to his royal position and status he knew you'd crack under the social pressure to accept his hand in marriage.
You thought the trip to Briar Valley would be one of joy and remembrance, it ended up sealing your faith for your coming years. You knew what Malleus was capable of, you've seen him Overblot due to you trying to leave and go back home to your world. So to not cause another mishap you agreed to the marriage against your mind, with the whole kingdom of Briar Valley watching on as their Prince finally found their true love.
The wedding was to be held after you two graduated from NRC, which isn't far away since you two are both third years. You'd try everything in your power to delay the inevitable, you'd try to purposely fail to repeat the year but Malleus was one step ahead of you and would pull a few strings to make sure that you'd pass with flying colors. It was hopeless in the end, when graduation day hit the only person that was terrified was you, know that will be the only and last day you'd have an opportunity to make your escape back to your world.
Again Malleus was a step ahead of you and instead of the two of you attending the after party, you two went straight to Brair Valley for the wedding. You gave up at this point, you don't hate Malleus, you just hate that you might end up in a loveless marriage with someone you barely knew the school year. You sat in your designated room in your wedding dress tailored to compliment your body, a chamber maid came in and told that the time has come.
You stood at the aisles. Everyone watching