Prepare the Pan: Preheat your oven to 350°F. Lightly grease a 13x9-inch baking dish and set it aside.
Make the Cake Batter: In a large mixing bowl, whisk together the cake mix, eggs, water, and oil until smooth.
Add the Color: Mix in the pink food coloring and whisk until the batter is evenly colored.
Bake the Cake: Pour the batter into the prepared baking dish and bake for 25–35 minutes, or until a toothpick inserted in the center comes out clean.
Soften the Cream Cheese: While the cake is baking, set the cream cheese out on the counter so it can soften.
Cool the Cake: Let the cake cool in the pan for 15–20 minutes.
Crumble the Cake: Transfer the cooled cake to a large bowl and crumble it into fine pieces.
Make the Cake Ball Mixture: Add the softened cream cheese and beat with a mixer until a soft dough forms.
Shape the Hearts: Roll the mixture into 1-inch balls, then gently shape each ball into a heart.
Melt the Candy Coating: Prepare the pink candy melts according to the package directions until smooth and melted.
Coat the Hearts: Dip each heart into the melted candy coating, allowing any excess to drip off. Place the coated hearts on parchment paper.
Melt the Decorative Drizzles: Place a few red and white candy melts into separate sandwich bags. Microwave until melted, gently kneading the bags to smooth out any remaining lumps.
Decorate the Hearts: Snip a tiny corner from each bag and drizzle the red and white candy melts over one corner of each heart.
Chill and Serve: Let the coating set completely, then refrigerate the heart-shaped cake balls until ready to serve.