What the last verse in 'The Raven' means?

In the last verse of "The Raven," the narrator resigns himself to the endless sorrow and longing for his lost love, Lenore, which will haunt him for eternity. The repetition of "nevermore" reinforces the finality of his despair and the inevitability of his grief. The Raven's presence symbolizes the permanence of his sorrow and serves as a reminder of his inability to move on from his loss.