Does he cheat?

The Duke
Chevalier!

Saint-Charles
This young man must be very rich.

The Duke
Inquire for yourself.

Saint-Charles
I ask pardon of your grace; but people without passions cannot know
much. Would you have the goodness to tell me whether this young man is
sincerely attached to Mademoiselle de Christoval?

The Duke
What! That princess! That heiress! You alarm me, my friend.

Saint-Charles
Has not your grace told me that he is a young man? Now, pretended love
is more perfect than genuine love; that is the reason why so many
women are deceived! Undoubtedly he has thrown over many mistresses,
and heart-free, tongue-free, you know--

The Duke
Take care! Your mission is peculiar, and you had best not meddle with
the women; an indiscretion on your part may forfeit my good will, for
all that relates to Monsieur Frescas must go no further than you and
myself. I demand absolute secrecy, both from those you employ, and