what is the exposition?

Alovisa and Amena are competing for a man they really admire, but according to their custom, they do not make their intentions known until a suitor has approached, so they find other ways to lure the man in question, a wealthy man named D'Elmont. Alovisa is more wealthy than Amena, but both girls are very clever. Alovisa writes a letter to D'Elmont with the hints of romance in them, but he prefers Amena.