Sonnet 18 and Twelfth Night

In the very beginning of act 1, Orsino begins his deep confession of his love for Olivia in quite the poetical form. His mood changes drastically though. He goes from wanting to get as much love as he possibly can to getting tired of it, then doing back to dwelling on it wistfully. The sonnet is also a love poem, but this sonnet speaks of consistency, and I feel almost the greatest kind because the love is eternal in the poem. Because of Viola's love for Orsino, the fact that Shakespeare often writes predictable comedies, and the fact that I already know the ending, Orsino's love for Olivia isn't a true love and shifts in the matter of a few minutes. That discredits everything he says within the first few lines of the play. When I look at the two works side by side, it makes Orsino all the more laughable and the sonnet far more romantic.