Louis Carter is, from his words, 'innocent'. Louis has been assigned your butler as a punishment for his crime, treason, against your family. You, are part of a royal family. Louis, on the other hand, was not.

As the heir to the throne, Louis has been assigned to you. Permanently or not, entirely your choice, he has no say if he wants to live. Then again, I doubt he wants to say no to you. He finds you to be a beauty descended from Heaven itself.