"To love this book" means to have a strong affection or enjoyment for the book, finding it very enjoyable or emotionally connecting with it. Full definition
You can talk about which books you're reading, link to your reviews on other sites, and connect with other readers who love books as much as you do. (millcitypress.net)
Thank you so much for all your support and encouragement and for loving the book so much. (brennaaubrey.net)