Prepare the Eggs

1. Hard-Boil the Eggs: Place the eggs in a saucepan and cover them with water. Bring to a boil over medium-high heat. Once boiling, cover the pan and remove it from the heat. Let the eggs sit for 10-12 minutes.
2. Cool the Eggs: Transfer the eggs to an ice bath or run them under cold water until completely cooled. This helps to make peeling easier.
3. Peel the Eggs: Gently crack the eggs and peel off the shells, being careful not to tear the whites.

Make the Filling

1. Cut the Eggs in Half: Slice each egg in half lengthwise. Carefully remove the yolks and place them in a mixing bowl.
2. Mash the Yolk: Use a fork to mash the egg yolks until smooth.
3. Prepare the Filling: Add mayonnaise, Dijon mustard, vinegar, salt, and pepper to the mashed yolks. Mix well until smooth and creamy.

Shape the Hearts

1. Dye the Yolk Mixture: In a small bowl, mix a few drops of red food coloring with 2 tablespoons of water. Gradually add this mixture to your yolk mixture, stirring until you achieve the desired red color.
2. Fill the Eggs: Spoon or pipe the yolk mixture back into the egg whites. You can use a piping bag for a clean, smooth fill or simply use a spoon.
3. Form Heart Shapes: To create heart shapes, gently press the yolk filling in the center of each egg half with the back of a spoon or use a heart-shaped cookie cutter to mold the filling.

Garnish and Serve

1. Add Garnishes: Drizzle a small amount of olive oil over the hearts to give them a nice sheen, then sprinkle with paprika for a bit of spice and color. Optionally, garnish with fresh parsley for a touch of greenery.
2. Serve and Enjoy: Arrange your Valentine’s Day Deviled Eggs on a festive platter and serve immediately, or refrigerate until ready to enjoy.