1. Preheat oven to 350 degrees and prepare a cupcake pan with cupcake liners.
2. Beat butter and sugar until light in color and fluffy, about 2-3 minutes.
3. Add sour cream and strawberry extract and mix until well combined.
4. Add egg whites in two batches, mixing until well combined.
5. Combine dry ingredients in another bowl, then combine milk and strawberry puree in another bowl.
6. Add half of the dry ingredients to the batter and mix until well combined. Add the milk mixture and mix until well combined. Add remaining dry ingredients and mix until well combined.
7. Stir in pink color.
8. Fill cupcake liners about halfway. Bake for 15-17 minutes, or until a toothpick inserted comes out with a few crumbs.
9. While cupcakes cool, make the frosting. Beat cream cheese and butter until smooth.
10. Add half of the powdered sugar and mix until smooth.
11. Add vanilla extract and remaining powdered sugar and mix until smooth.
12. To make the toppers, melt candy melts in a small bowl according to package instructions.
13. Pour melted candy into your piping bag fitted with Wilton tip #3 and pipe “love” onto parchment paper. Add a few sprinkles, then allow to dry and firm.
14. Pipe the cream cheese frosting onto the cupcakes using Ateco tip #844, then add toppers.