That complaint cannot truly be called a grievance if someone is complaining about something enjoyable or pleasurable.

Here, the poet plays with the sweet paradoxes of romantic love, where a grievance can turn into pure praise. When someone playfully complains about how overwhelmingly delightful an experience or a beloved's attention is, that is not bitterness, but intense joy disguised as a protest. In the poetic tradition, such lovers' quibbles are really celebrations of intimacy, where even the torment tastes sweeter than peace.