Doves never bore choicer billet-doux beneath their wings.
She accordingly sent him a little billet-doux intimating her wishes in the most agreeable language.
She had never seen him—but she had heard of moonlight walks and tender billet-doux.
He was perusing a billet-doux written in a lady's hand.
This billet-doux was sealed and despatched, and in due time brought an acceptance.
The sexton who emptied it of its contents found in it more than fifty sequins, and several billets-doux, to the great scandal of the weaker brethren.
I sent her three or four billets-doux every day, and received as many.