I won't allow you to call off the engagement.

At this time, breaking engagements had become fashionable among the nobility. It all started when the Second Prince broke his engagement with a Duke's daughter, proclaiming "true love" with a Baron's daughter. After that, engagement-breaking became all the rage among pubescent noble men, and young ladies continued to fall victim to it. ...The young ladies were racking their brains trying to figure out how to prevent their engagements from being broken. I was one of them. One day, when my fiancé was about to break our engagement, I put into action a method I had been considering beforehand. It was none other than——shutting the other person's mouth to prevent them from making the declaration.