My local grocery store will cut steak in heart shapes, like last year I bought one for my husband and I, it was two halves of a heart shape put together to form a whole heart but each half represented each other. Then for the kids, I made a heart shaped homemade pizza and laid the pepperoni onto the pizza in a heart shape and spelled out love with black olives. Then of course the candy and teddy bears.
It was pretty cool grilling a heart shaped steak. The kids loveeeeed eating a heart shaped pizza made just for them.