Summary:
Rarity accidentally uncovered a dark secret of Fluttershy. The yellow pegasus apparently has been fucking one of her canine companions and while it was definitely a surprise to stumble on, it wasn't out of the question either. Fluttershy's friends have teased her tremendously about being an animal fucker but they didn't actually know she was doing it, so seeing her in action could stun a few. Upon witnessing this, something in Rarity clicked and wanted to participate in this "little" secret of Fluttershy.

WARNING! Very taboo fic, please don't read if you're not comfortable with the following kinks in the spoiler.

Kinks: Bestiality (duh), feral on anthro pony, foot fetish, light watersport, rimming, "cheese"

Note: Most of the fetishes included on the list are in the second chapter, the first chapter is simply bestiality.