A couplet consists of two lines that usually rhyme and have the same meter.
From the provided lines, 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." -
"O no, it is an ever-fixed mark
That looks on tempests and is never shaken;"
Each of these examples contains two lines, but only the first two provided are genuine couplets. The third example is not a couplet as it consists of only one line. Therefore, the correct 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.”