In this 7th book of Mouse and Mole, the best friends make valentines for their friends.  Every time they think about each other, they get butterflies in their stomachs, but they do not yet realize the depth of their feelings for each other.  They make secret deliveries of the cards to their friends and furtively sneak special valentine clues to each other.  Directions for making valentines are included within the story as well as at the end of the book.  There is good plot progression, new details and hints in valentine messages are frequent, and there is humor throughout.  Drawings in litho pencil and gouache create warm, colorful, outlined illustrations that add even more fun information to the story.