“Polyamory.”

Rainbow Dash blinked at Rarity. “Come again?”

“Polyamory. What you’re trying to build with Pinkie Pie and Fluttershy is called a polyamorous relationship."

“Okay,” said Rainbow Dash, “fine. So I know what it’s called. But what I really need to know is how I’m going to make it work!”

Featured on the Pony Fiction Vault, 05/11/12!
Sequel

I'm Griffin, not much else to it. I've been bullied most of my life, which left me bitter and sarcastic. I'm a closet brony. What? You think I'm just gonna go out and tell a world that hates me that I watch a cartoon intended for little girls? I don't feel like giving the punks at school any more ammo. That's when cosmic powers decide I need to take a trip to my favorite fantasy land. But all is not sunshine and rainbows and it certainly won't be after I'm done with it. Equestria from the point of view of an extremely pissed off teenager, with a twist. Rust, the author of 'The Ballad of Echo the Diamond dog' is awesomesauce enough to have a cross over between our stories. Carnelian is a boss when it comes to art. Part of the 'Chess Game of the Gods'.

Violence, gratuitous swearing, and sexual themes. Reader discretion is advised.

In her youth, Twilight Sparkle discovered a way to infuse technology and magic. 20 years after her breakthrough, she is now the CEO and founder of Sparkle Industries, and one of the wealthiest ponies in Equestria. Her relatively perfect life goes sour, however, when she is captured by a group of griffons who want to steal her technology.

This story is a sequel to Under the Starry Skies

After a recent humiliating experience involving too much chocolate mead and karaoke that was less than "family friendly," Fluttershy flees into the safety of the forest to escape the mess she's made. Wandering aimlessly for hours deep in thought, she comes to and realizes she has no idea where she's wandered, is incredibly thirsty, and very uncomfortable under the late summer sun. So, when she discovers a chilled pond with which to slake her thirst and cool down, she pays little heed to the strange green bush on the far side. That is, until it opens its eyes.

Creds to OminousBrony for cracking the whip, and tossing in ideas.
art by askheroichamburger of DeviantArt

This story is a sequel to The Risks of Braving a Storm

Tired of the city life in Manehatten and longing for something simpler, Silver Moonshine uses his life's savings to open a business in Ponyville. While he is mostly well recieved, the one pony who takes the most issue with his trade happens to be the only mare that's ever caught his eye - Applejack. However, she is incredibly skeptical of the newcomer even as she struggles with feelings of desire, loneliness, and the fear of having her heart broken twice.

Credit for the art goes to guttyworks of DeviantArt, though his account is no longer active.

This story is a sequel to Tears in the Snow

Storm Blitz is displaced from his home in Cloudspire after his special talent causes several pegasi to become severely crippled. His adoptive father, the renowned politician Proud Skies, sends him to live with his grandfather in a gated off community for retired Wonderbolts. When his grandfather suddenly passes away, he goes to the only remaining relative he has, his earth pony birth father in Ponyville.

A collaboration effort between myself and OminousBrony.

Picture by askheroichamburger of DeviantArt

There was only one explanation. For all of it. All of the strange, erratic behavior. Her irrational fear of the sun. Her nocturnal habits of locking herself in in the dark and closing all the blinds. Wearing her sunglasses everywhere, even inside! It was time to invest in some silver, garlic, and a wooden stake.

Princess Luna's Lunar Stallions kidnap Twilight Sparkle when they see how lonely Luna is, and give her to the Princess as a gift. Nightmare Moon emerges from Princess Luna's psyche during the sleepover. The dark goddess would love nothing more than to have the beautiful mare all to herself, and the resulting chaos forces Celestia to call a psychologist to sort out Luna's multiple personalities.

[Complete!] When Rarity finds out how little Twilight gets out of the Library, things get out of hand as she decides to take it upon herself to teach Twilight the ropes of dating. As Rarity drags her around, Twilight begins to have a good idea of who she wants to ask out.

For almost a thousand years, the immortal Nightmare Moon has reigned over Equestria as Empress. To the average pony, Nightmare Moon is an overarching enigma whose rule is absolute and whose wrath is terrible. But to Twilight Sparkle, who as an orphan has never known her parents, the Empress is something else entirely. When the young unicorn is brought under the royal wing as an apprentice, she learns a great deal more about the supposed tyrant than she ever knew. But as Twilight is introduced to life with her new mentor, she is thrust into a world of political intrigue, conspiracies and secrets. Secrets that were never meant to be revealed. As allies and enemies plot against the very peace of the nation, will Twilight fall prey to the perils of her new position? Or will she prosper and find in Nightmare Moon the mother she never had?

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My eternal gratitude to my editor, LordOfTheWrongs, without whom Night's Favoured Child would not be the story it is today.

Now with added TVtropes!