The final stanza of the poem "When We Two Parted" by Lord George Gordon Byron, is cyclical because it repeats the phrase "in silence and tears" from the first stanza of the poem. This repetition symbolizes that there will be no end to his grief over the loss of this person from his life. In fact, throughout the poem he is replaying the emotions from day they "parted" to the sadness he still feels. The repeating ABABCDCD rhyme scheme in each stanza also adds to this cyclical feeling and the idea that the narrator is unable to break free from his sorrow. The narrator also makes a point of speaking toward the future in this final stanza, now that we have already heard about his past and present sadness. He has no doubt that, "after long years," he will still cry when he sees this past lover.
This makes the final stanza the saddest. He is completely alone in his grief because his relationship was a secret one, which is perhaps why the entire poem is written in the second-person, and addressed directly to his estranged lover. Who else would he address it to? Nobody else knows about this secret love. The final three lines, (31-32) show that he accepts his fate, which is to love this person secretly forever, even though he knows they will never be together and that he shall never speak his sadness with anyone.