"Wind and Window Flower" by Robert Frost

Lovers, forget your love,
And list to the love of these,
She a window flower,
And he a winter breeze.

When the frosty window veil
Was melted down at noon,
And the caged yellow bird
Hung over her in tune,

He marked her through the pane,
He could not help but mark,
And only passed her by
To come again at dark.

He was a winter wind,
Concerned with ice and snow,
Dead weeds and unmated birds,
And little of love could know.

But he sighed upon the sill,
He gave the sash a shake,
As witness all within
Who lay that night awake.

Perchance he half prevailed
To win her for the flight
From the firelit looking-glass
And warm stove-window light.

But the flower leaned aside
And thought of naught to say,
And morning found the breeze
A hundred miles away.

- Robert Frost

Now, Mr Robert Frost is probably more famous for his poem "The Road Not Taken", but I think his other poems, like "Wind and Window Flower", are excellent too. One year back, I doubt I would have understood this.