Final answer:
The provided references do not correspond to the novel "Aristotle and Dante Discover the Secrets of the Universe"; therefore, it is not possible to answer what Ari and Dante fall in love with during their first summer based on the given excerpts.
Step-by-step explanation:
The question seems to be misplaced as it references Ari and Dante, suggesting it relates to the novel "Aristotle and Dante Discover the Secrets of the Universe" by Benjamin Alire Sáenz. However, the provided references do not pertain to this novel or its characters. They seem to be excerpts from classic literature and descriptions of lavish and fantastical scenes, which do not directly answer the question about what Ari and Dante fall in love with during their first summer together.
Instead, the excerpts discuss themes of love, desire, and fleeting ecstasy, evident in the lives and relationships of different characters. For example, one excerpt deals with Dexter's complicated feelings for Judy and the bittersweet nature of their acquaintance, showcasing the theme of unfulfilled love and desire. Another illustrates a fantastical environment filled with sensory experiences and opulence that young John Unger encounters, highlighting the enchantment of youth and new experiences.
Since the descriptions provided do not align with the context of "Aristotle and Dante Discover the Secrets of the Universe," which is a contemporary coming-of-age story about two boys discovering friendship, identity, and love, I am unable to provide an appropriate answer to the student's question based on the given references.