The central premise is monster meets girl while pretending to be human and falls in love. Hijinks ensue. But the monster spends a lot of time struggling with what it is to be human and simultaneously being incredibly canny about human relationships. Which is kind of a clash and drew me out of the story a number of times.

Also, without getting too spoilery, suffice to say I liked the beginning portion of the book more than the ending portion after various twists.