Within my time, a lady could not be alone with a gentleman unless they were married. Granted, we were trespassing upon that, but the situation is a bit difficult right now.

Still, it gives some context to the party tonight. If Owen wants to win dear Chastity's heart, he needs the time and place to do so. So, here we are, assembled at a party to give him the means to woo his lady in an, mm, acceptable situation.