I really enjoyed Invisible Love Letter, but Endless Love Letter took my heart on a journey that I can't even explain in words. This book didn't just have me crying, I was sobbing at points. I had to take multiple breaks just to regain my composure... and let me just clarify that I may tear up occasionally, but I don't cry when reading books. I don't want to give any spoilers on the story because you have to experience this for yourself, but I will talk about how wonderfully written this book is. The characters are relatable. The story is told from Weston's POV yet Callie was able to include each characters feelings so that your heart just broke for each of them, Weston, Emilia and especially poor Lyra. I've been in Lyra's shoes personally and Callie nailed all the emotions. This book is about "Enjoying the small moments", not taking anything for granted because "The days are long, but the year is fast". My review cannot do these book justice. Please just read it and have tissues, lots of them.