Now there's the Rhyming Couplet...
The couplet is located in the very last two lines of the sonnet and the last two words always rhyme.
Why is the rhyming couplet significant? Rhyming couplets are used in poetry to make the poem more interesting, and it delivers the sole message of the poem. If you do not understand any of the poem, look at the last two lines and you'// discover the meaning.