Place red candy melts in a large microwave-proof bowl.
Microwave for 30-second intervals at 50% power, stirring after each heating, until the candy melts are smooth and creamy. It should take between three and four minutes.
Next, add one-third, or 3 ounces, of the corn flakes to the melted red candy.
Then, carefully stir everything together until all of the corn flakes are completely covered in the melted red candy.
Next, place a heart-shaped cookie cutter on a large-rimmed baking sheet lined with wax paper.
Then, using a ¼ cup ice cream scoop, drop one scoopful of the red corn flake mixture into the cutter.
Next, distribute the red corn flake mixture evenly inside the heart-shaped cookie cutter using a chopstick.
Then, carefully remove the cookie cutter from the pan by slowly pulling it straight upwards. If the heart loses any of its shape, use the chopstick to lightly push the red corn flakes back into place.
To make the rest of the red hearts, repeat steps 5-8 with the remaining red corn flake mixture.
Once all the red hearts are made, set aside pan to allow the melted candy to harden while you make the hearts of the other two colors.
To make the bright pink and light pink corn flake hearts repeat the above steps with each of the other colors.