Throughout the story, the American behaves according to Hemingway’s rigid conception of masculinity. Hemingway portrays the American as a rugged man’s man—knowledgeable, worldly, and always in control of himself and the situation at hand. Even when vexed or confused, he maintains his cool and feigns indifference, such as when he tells the girl he doesn’t care whether she has the operation. He initially avoids discussion of their problems, but when pressured, he tackles them head on by oversimplifying the operation and relentlessly pushing her to have it. Thinking himself to be the more reasonable of the two, he patronizes the girl and fails to provide the sympathy and understanding she needs during the crisis. Uncompromising, he seems to identify more with the other passengers “waiting reasonably” at the station than with his own girlfriend at the end of the story, which suggests that the two will go their separate ways.
Compared to the American, Hemingway’s overly masculine character, the girl is less assertive and persuasive. Throughout the story, the girl appears helpless, confused, and indecisive. She changes her mind about the attractiveness of the surrounding hills, for example; claims to selflessly care only for the American; and seems uncertain about whether she wants to have the operation. In fact, the girl can’t even order drinks from the bartender on her own without having to rely on the man’s ability to speak Spanish. Ironically, the girl seems to understand that her relationship with the American has effectively ended, despite her professed desire to make him happy. She knows that even if she has the operation, their relationship won’t return to how it used to be. In many ways, the girl’s realization of this fact gives her power over the American, who never really understands why they still can’t have “the whole world” like they once did.