from Love, Theoretically by Ali Hazelwood
Jack's half-brother
Readers picture Dean-Charles Chapman as Greg in Love, Theoretically by Ali Hazelwood. Other fancast picks include Asa Butterfield, Noah Jupe and Finn Wolfhard.
Picture someone else? to vote or add your own pick.
How readers say the book describes them.

Elsie Hannaway
Kaitlyn Dever

Jack Smith
Damian Hardung

Monica Salt
Michelle Yeoh

Caroline Smith
Lena Headey

Millicent Smith
June Squibb

Cece
Halle Bailey

Christophe Laurendeau
Mathieu Amalric

Georgina Sepulveda
Cierra Ramirez

Elsie's Mother
Amy Sedaris

Austin
Israel Broussard