Nos links para o wiki que você deu, ele tenta explicar isso nos seguintes parágrafos:
During the next few months Summer and Tom grow closer, despite Summer's telling Tom that she does not believe in true love, and does not want a boyfriend.
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On day 290, Summer and Tom end their relationship after they see The Graduate, a film which Tom thinks shows true love
Passar para o wiki para a pós-graduação mostra que isso é potencialmente vinculante, embora seja difícil fazer uma citação que mostre "amor verdadeiro". Acho que isso resume melhor:
With some hesitation, Elaine returns a cry of "Ben!" and rushes toward Benjamin. A brawl breaks out as everyone tries to stop her and Benjamin from leaving. Elaine manages to break free from her mother, who claims "It's too late!", to which Elaine replies, "Not for me!" Benjamin and Elaine escape the chapel by barring the chapel's double doors with a wooden cross, trapping the attendees inside