Indeed they are perfect for the fairytale beauty and the beast
But in my opinion this couple would fit Shrek too. Just think.
A creature who is dangerous and spend his time alone. "Ponies" want to get rid of this creature but "Discord" is to scary to defeat. When his land of chaos gets full of fairytale figures in mlp style and Discord is furious about it. "He doesn't have his powers in this story". And asked how they got there. It was the "king" Sombra who sent them to the land if chaos. But Sombra have to marry the "princess" Fluttershy to be king. But Fluttershy are prisoned in a tower guarded by the big dragon and Fluttershy is to scare to fly.
(Yeah yeah I know about Celestia, Luna, twilight and Cadence. But hey, Cadence are already married and I'm a fluttercord fan)
I adore this so much. Beauty (in heart and voice and appearance) tames the curmudgeonly, chaotic, yet lonely Beast and brings him back to earth with loving kindness; in return he gives her fresh wings of confidence and trust to soar upon. And when nights in Ponyville get chilly, they sleep warm in each others' gentle embrace. Friendship is truly Magic.
GUESS WHAT?! I have heard rumors, that Fluttercord may become cannon in season 5. De Lancie mentioned that in this episode. Fluttershy want's to bring a friend over, for her and Discord's hangout, and Discord get's Jelous. Also that flowers thing with Celestia. It was just an apology thing Meghan McCarthy said, which is true not just a rumor! I saw the proof.