I have very fond memories of this poem ("Objective romance") by Erich Kästner (known mainly as the author of Emil and the Detectives), learned while studying in beautiful Freiburg im Breisgau. You can read the original here.
Eight years they'd known each other well
(And one can say quite well at that),
When suddenly their love's light fell
Like others lose a cane or hat.
And sadness rose, then merry lies,
And kisses flew to cloud their fate.
Without a plan they wed their eyes;
At last she wept, beside her mate.
The ships were close enough to wave,
When he declared it four-fifteen.
A coffee might this day still save,
Next door a piano's scales were lean.
A small café, the smallest lair
They chose and stirred each with one hand.
When evening came, they sat still there;
They sat alone, no words to share,
And simply couldn't understand.