How do you know that I am not writing a billet doux to a lady?
While passing the Needles, the pilot took his leave, burthened with numerous epistles and billet doux, to wives and sweethearts.
It was fitting that Raymond should receive the first billet doux.
Has he destroyed the writings of an estate, or your billet doux?
I could not avoid permitting him to slide his billet doux into my hand as he put on my shawl.
I made him no reply: I contented myself with placing Glanville's billet doux in his hand.
We agreed we must put a billet doux there, if another day passed without the sign, though it was dangerously near Pirate Hall.