A couplet consists of two consecutive lines of poetry that typically rhyme and have the same meter. In the lines you provided, the couplets are:
- “If this be error and upon me proved, I never writ, nor no man ever loved.”
- “Love alters not with his brief hours and weeks, But bears it out even to the edge of doom.”
The lines you repeated are identical, so they don't form distinct couplets. If you're asking which lines together make a couplet, you can't pair them, as the statements in the options remain individual.
However, those lines above do showcase couplets in their content. Note that a couplet may also refer to more substantial themes or meaning rather than merely requiring repetition or identical lines.