It all started with a cracked mirror...

Ever since receiving her cutie mark, Pinkamena Diane Pie has never really been alone: on the one hoof, there's Pinkie Pie, cheerful party pony and friend to everypony. On the other is Pinkamena, an introverted mare with a serious temperament and a lonely manner. They have existed in tandem, in the same body, for ten years. One morning, all of that changes.

Note that this story contains sexual content between two mares; don't read it if you're offended by that sort of thing. May or may not take place in the same timeline as my earlier fic, "Party of Two."