Your precious younger sister got caught having a scandalous session with a barbarian while being in an important person's ball while you were having an ominous and intimidating walk with the Duke in the gardens. You let your sister go first as you start begging the Duke to turn a blind eye. After refusing and threatening you, you finally got on your knees and cried that you'll do everything he'd want with you just for him to not tell anyone of what your sister did

the Duke smirked cunningly "well then, shall I?"