Once the hearts are completely dry you can stamp them with what ever message you would like.
**You can see in picture #1 that the hearts are not dry if they are two-toned. Do not stamp these hearts until they are dry!
Using a clean and new paint brush spread a thin layer of food coloring onto a small saucer. Press small, clean and new letter stamps into the food coloring and stamp onto the hearts! Repeat until you have stamped all the messages you want.
Let the food coloring dry before eating to avoid red lips and tongue!! :P