Nay call me not - it may not be

Nay call me not - it may not be
Is human love so true?
Can Friendship's flower droop on for years
And then revive anew?
No, though the soil be wet with tears,
How fair soe'er it grew
The vital sap once perished
Will never flow again
And surer than that dwelling dread,
The narrow dungeon of the dead
Time parts the hearts of men