The great ending.
Before he met her he had always been on time, but now he finds his mind is muddled with love and he is never anything but late.
In the end of the story he has a choice to make. There are two trains, one at one o'clock (choosing her) and the other at half past twelve (leaving her behind.)
His friend asks him as he arrives at the station.
"Have you dscided what you're going to do?"
"Well," he says, "I wouldn't want to be late any."
It is twelve o'clock.