Nostalgia: A bittersweet longing for things, persons, or situations of the past.
Longing: A strong, persistent yearning or desire, especially one that cannot be fulfilled.
“Loneliness is the human condition, get used to it” – White Oleander by Janet Fitch
As the days progressed
the night seemed to come earlier
And she would lie awake
thinking of him
thinking of the days that might have been