The lines you provided are an example of a couplet. A couplet is a pair of consecutive lines in poetry that often rhyme and have the same meter. In this case, the couplet is written in iambic pentameter, with ten syllables per line and a stressed-unstressed pattern. The lines express a conditional statement, where the speaker claims that if their previous statements are proven wrong, then they have never written anything and no man has ever loved.
