Although Shakespeare's sonnets can be divided into different sections numerous ways, the most apparent division involves Sonnets 1–126, in which the poet strikes up a relationship with a young man, and Sonnets 127–154, which are concerned with the poet's relationship with a woman, variously referred to as the Dark Lady, or as his mistress.
In the first large division, Sonnets 1–126, the poet addresses an alluring young man with whom he has struck up a relationship. In Sonnets 1–17, he tries to convince the handsome young man to marry and beget children so that the youth's incredible beauty will not die when the youth dies. Starting in Sonnet 18, when the youth appears to reject this argument for procreation, the poet glories in the young man's beauty and takes consolation in the fact that his sonnets will preserve the youth's beauty, much like the youth's children would.
By Sonnet 26, perhaps becoming more attached to the young man than he originally intended, the poet feels isolated and alone when the youth is absent. He cannot sleep. Emotionally exhausted, he becomes frustrated by what he sees as the youth's inadequate response to his affection. The estrangement between the poet and the young man continues at least through Sonnet 58 and is marked by the poet's fluctuating emotions for the youth: One moment he is completely dependent on the youth's affections, the next moment he angrily lashes out because his love for the young man is unrequited.
