For her this rhyme is penned, whose luminous eyes,
Brightly expressive as the twins of Leda,
Shall find her own sweet name, that nestling lies
Upon the page, enwrapped from every reader.
Search narrowly the lines!- they hold a treasure
Divine- a talisman- an amulet
If the first letter of the first line, second letter of the second line, third letter of the third line, etc. are spelled out it will spell the name  Frances Sargent Osgood  a fellow poet who frequently exchanged love poems with Poe.
A Valentine