Amory’s romance with Isabelle establishes many of the tropes that reoccur in his subsequent romances throughout the book: Isabelle is wealthy (wealthier than Amory), charming, flirtatious, and somewhat haughty. In these ways, she is quite similar to Amory, and it is perhaps their similarity that attracts them to each other. Both are quick to admit their infatuation, which leads to the immediate romantic intensity of their affair. Isabelle’s character is based on a real relationship F. Scott Fitzgerald had with Ginevra King, a Chicago socialite.