"About a Boy' meets The Rosie Project" - quirky, heart-warming contemporary fiction about second chances, unlikely friendships, and discovering the courage to love.

Michael Lamb is brilliant with numbers and useless with people. When his girlfriend, Ifeoma, dumps him for admitting he'd run away if she was mugged, Michael realises he's missing something fundamental: empathy. To fix it, he enrols in a PhD in Sociology.

His subject? Eleven-year-old Callum Duffy, a boy who can't stay out of trouble but who has huge courage and the biggest heart. Callum loves a girl. His best friend, Angel Rain, has a heart condition and he needs a miracle to make her well.

Studying Callum forces Michael to grow in ways he never imagined. And when Ifeoma re-enters his life, Michael has a choice: stay safe in numbers, or risk everything for love.

Funny, moving and unforgettable, Probably the Greatest Love Story Ever Told will make you laugh, cry, and believe again in Christmas miracles.

Perfect for fans of The Rosie Project, A Man Called Ove, and It's a Wonderful Life.

WARNING: This book may make you cry happy tears.