Final answer:
The speaker starts by comparing her love to a red, red rose and ends by describing it as rare. This shows that she values the beauty and uniqueness of her love.
Step-by-step explanation:
The speaker in the poem moves through a series of comparisons to express her love from lines five to ten. She starts by comparing her love to a red, red rose, and then progresses to comparing it to a melody, a sweetly sung song, and a melody. She ends the series of comparisons by stating that her love is as rare as any that has ever been. This progression shows that the speaker values both the beauty and uniqueness of her love.
The speaker's progression from comparing her love to a "red, red rose" to describing it as "rare" unveils a thematic shift in the poem. Initially, the emphasis is on the vivid and passionate imagery associated with a rose, symbolizing the intensity of her love.
As the comparison evolves to denote rarity, the speaker elevates the uniqueness and scarcity of her affection. This transition suggests that, beyond valuing beauty, she places significance on the exceptional and unparalleled nature of her love. The use of "rare" implies a sentiment that goes beyond mere visual allure, emphasizing the extraordinary and incomparable essence of the speaker's affection.