A successful landscape architect and the male romantic lead whose breakup at the beginning of the story prompts him to reflect on the nature of meaningful relationships. Jack is known for his good looks and charm and seeks a deep connection founded in true friendship.

Jack’s sister and a supportive character, she functions as a mentor, offering guidance and perspective to both Jack and Hallie. Her own relationship serves as an example of a loving partnership while she encourages honesty and genuine connections.

Hallie’s adventurous and eccentric roommate, providing comic relief and contrast with her impulsive nature and unique lifestyle. She supports Hallie's journey of self-discovery and plays a role in moving the plot forward.

Hallie’s ex-boyfriend, who represents her past relationship challenges and serves as a foil to Jack. His past with Hallie provides context for her current personal challenges and highlights her journey toward healing and self-awareness.