In the book "The Upside to Being Single" by Emma Hart, the author uses humor to contrast alligators and crocodiles as a metaphor for relationships. The distinction highlights the differing attitudes toward commitment and time in romantic pursuits. The playful twist suggests that an alligator signifies a more immediate, albeit less serious, connection, while a crocodile hints at an elusive, long-term promise.

This witty comparison serves to reflect on the nature of dating and the varying expectations one might encounter. By focusing on the casual and lighthearted dynamics of single life, Hart encourages readers to embrace their independence while recognizing the different paths love can take.