Read "Even in Slumber" at The Eldritch Dark:
This short poem from Clark Ashton Smith (CAS) has a distinctly nightmarish quality, amplifying the experience of separation from a loved one. These lines from the opening stanza are particularly fatalistic:
To seek thee in vast throngs and dreamlands desolated—
And find thee nevermore.
Despite being so short, "Even in Slumber" packs a haunting punch as it recalls a bad dream with frightening precision.