Return the Bride. Dragon at the Academy

My father decided it was time to marry me off and practically sold me to a dragon. The unfamiliar groom is eager to get married, but I don't want that.
Thanks to my grandmother, I managed to escape to the magic academy, where I intended to enroll anyway.
I wanted to study and nothing more, but as soon as a strange teacher appeared at the academy, everything went awry.
What drives them — a desire for revenge or sincere feelings for me?