From the author of the INTERNATIONAL NO. 1 BESTSELLER THEY BOTH DIE AT THE END comes an explosive examination of grief, mental illness, and the devastating consequences of refusing to let go of the past. You're still alive in alternate universes, Theo, but I live in the real world where this morning you're having an open casket funeral.I know you're out there, listening. And you should know I'm really pissed because you swore you would never die and yet here we are. It hurts even more because this isn't the first promise you've broken.Griffin has lost his first love in a drowning accident. Theo was his best friend, his ex-boyfriend and the one he believed he would end up with. Now, reeling from grief and worsening OCD, Griffin turns to an unexpected person for help.Theo's new boyfriend. But as their relationship becomes increasingly complicated, dangerous truths begin to surface. Griffin must make a choice: confront the past, or miss out on the future...PRAISE FOR HISTORY IS ALL YOU LEFT ME: 'There isn't a teenager alive who won't find their heart described perfectly on these pages.' Patrick Ness, author of The Knife of Never Letting Go 'This book will make you cry, think, and then cry some more.' Nicola Yoon, author of Everything, Everything 'Sweetly devastating, passionately honest, breathtakingly human.' Becky Albertalli, author of Simon vs. the Homo Sapiens Agenda