Warming Up is a very explicit shipping fanfic for My Little Pony Friendship Is Magic. A particularly nasty winter comes to Ponyville. Worrying that Spike would freeze to death, due to him being a cold-blooded creature, Twilight suggests that Spike sleeps with her on the bed. However Twilight discovers that Spike has a crush on her, having a diary filled with explicit, sexual fantasies that he wanted to do with her. Touched, Twilight and Spike began having sexual relationship. This is very much a Porn with Plot. === Tropes: