This practical valentine befits your favorite bookworm.
To make the diminutive page keeper; Create a template of a heart,about 1 1/2 inches wide. Cut out with a utility knife,and trace onto heavy card stock. Copy it at 80 percent, cut out,and trace onto decorative paper, such as wrapping or origami paper. Cut out both hearts, and use a glue stick to secure smaller patterned heart to center of the larger one;let dry.
Finally, trace bottom half of inner heart with a utility knife, cutting through card stock beneath. Then your valentine can slip pages between the hearts.