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Tear Jerker: Pride and Prejudice
Elizabeth's Love Epiphany, because it comes with the conviction that they will never be together. Our knowledge of the Foregone Conclusion is no comfort to her. It's hard to see Elizabeth so shattered and depressed because she was so arch, lively and spirited before.
In Mr. Bennet's reaction to Elizabeth's engagement to Darcy, he drops the snarky mask and we get a peek of the regret he carries around with him. I always choke up a little when I get to this line:
Mr. Bennet: My child, let me not have the grief of seeing you unable to respect your partner in life.