The Sun Also Rises Lesson Plan

Why is it somewhat peculiar that Jake becomes jealous of a man like Cohn?

Jake's jealousy reaches its breaking point as he discovers that Cohn and Brett's relationship is even more intimate than he had previously believed. This realization forces him to confront his own feelings of jealousy, which he had been reluctant to acknowledge. Even Bill, who has a limited connection to Brett, experiences a sense of insecurity, evident in his unfavorable self-assessment when looking in the mirror.

To make matters worse, Cohn remains a somewhat pitiable figure, rendering him undeserving of the intense jealousy Jake and Bill feel toward him. The fact that Cohn cancels his bet,...