The Cords of Vanity by James Branch Cabell

So, for the seventh time, I asked Stella to marry me. Nearly every fellow I knew had done as much, particularly Peter Blagden; and it is always a mistake to appear unnecessarily reserved or exclusive. And this time in declining -- with a fluency that bespoke considerable practice -- she informed me that, as the story books have it, she was shortly to be wedded to another.

And Peter Blagden clapped the pinnacle upon my anguish by asking me to be the best man. I knew even then whose vanity and whose sense of the appropriate had put him up to it.