Bestows one final patronising kiss
And gropes his way, finding the stairs unlit...
Traditionally, Shakespearean sonnets end with a rhymed couplet, but here Eliot purposefully left out the rhyme to give you the sense of uneasiness that pervaded this entire scene.
The couplet always sounds conclusive at the end of a sonnet, but without the rhyme, it feels somewhat incomplete or incoherent, which is exactly how Eliot wants readers to feel about this sexual encounter.
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