Big Snorlax heard that delicious desserts are made on St. Valentine, and he turned red of the excitement...
Help him eat all the sweets you can get in order to exchange them for Crimson Roses!
Random pink Pokémon appear around the cities that can loot you ingredients to cook these delights.
Cheflax on PVP can help you cook the desserts if you bring him the ingredients.
Valentina likes these new roses so much and she will trade them for rewards.