This book sounds incredibly sweet and heartwarming. I can definitely see the comparisons to Nicholas Sparks, especially with the themes of letters and the intertwining of past and present love stories. The depth of emotion and the focus on enduring love make it seem like a must-read for fans of Sparks' novels. It's a story that promises to tug at the heartstrings and leave a lasting impression. Fans of Nicholas Sparks and those who enjoy deeply emotional love stories should definitely consider checking this one out.