Before revision: A royal mistress is the historical position and sometimes unofficial title of the extramarital lover of a Monarch or an heir apparent, who was expected to provide certain services, such as sexual or romantic intimacy, companionship, and advice in return for security, titles, money, honours, and an influential place at the royal court.
After revision: A royal mistress is the historical position and sometimes unofficial title of the extramarital lover of a monarch or an heir apparent, who was expected to provide certain services, such as sexual or romantic intimacy, companionship, and advice in return for security, titles, money, honours, and an influential place at the royal court.