check out this heart shaped pizza from seriouseats.com, you use a heart shaped cookie cutter (Michael's or JoAnn's) to cut the pepperoni into hearts and then shape the dough into a heart as best as you can!!!
LINK FOR RECIPE: http://slice.seriouseats.com/archives/2011/02/how-to-make-heart-shaped-pepperoni-slices-for-pizza.html?ref=carousel
hint: JOHN THIS IS A GOOD IDEA!!! BUT NOT FOR VALENTINES DAY!