After a vampire with a grudge doses Sam and Deans coffee, they boys leave it to (OC) Tilly to find the cure to their Vampirism. Though she has it, turns out the night coincides with a Blue Moon or Mating Season to some. Tilly quickly learns you can lead a horse to water but can't always make it drink. One-Shot threesome smut with an OC. Dean / Sam x OC