Fluttershy and Big Mac have long been friends - alike in their shyness and love of nature, they live a clean and happy friendship, where nothing is hidden from view.
Right?

Teen tag for mild sexual references

On a dark night filled with sparkly magic, a group of unidentified enthusiasts of some sort attempt to give Nightmare Moon some sizzle, utterly separate from Princess Luna. But, when the spell is interrupted by Celestia's slav... guards, something totally expected is created.

Now, a little black alicorn filly named Nyx finds herself held captive by Twilight Sparkle, only to be haunted by memories and emotions from her past. Is she Nightmare Moon reborn or is she simply a science experiment? Can Twilight Sparkle protect Nyx from those who would call her out on fillynapping?
Or, will Nyx be forced to inherit the poor fashion sense that may not even be hers and become the greatest evil Equestria has ever known?

Rainbow Dash had always acted rough and tough, and that's how she liked it. Always the strongest in the group, fitting in perfectly with the colts and stallions. Until a Wonderbolt named Soarin came along and turned that all upside down.

Fluttershy has always been a timid pony. It was a truth long accepted until the day she met her one and only love: that stallion who cared for her, protected her, and sheltered her from any harm... a stallion as quiet and as shy as she was.

In his embrace she grew, learned, laughed, and loved. She reached out further into the world than she ever had before, and with his support she became that mare she always dreamed she could be.

Now, as she stands overlooking the world, her memories of their times together will keep her warm when his hooves no longer can. With her final hours and the remembrance of their life together, her life will slowly fall back into place. With his confidence and her love, nothing can shake her. Now, at the end of everything, does she understand how it all went wrong.

What she doesn't understand, however, is that she's wrong about everything.
~~~~~
My regards to the incomparable AeronJVL for use of his artwork (Sunshine) and to my very first commenter and this story's pre-reader: Jagg

When your life is as dull a gray as the world that surrounds you, the mundanities can make it all seem meaningless. Sometimes we need a couple drugs -- or six -- and maybe a pegasus, to reintroduce us to what truly makes life worth living.

An odd request from Princess Celestia stirs up a new hurdle in the life of the mane six.
With one month until the next Gala, Twilight, Pinkie Pie, and the rest of the gang are given extra tickets. Why? Simply so that they may ask their special stallions to attend with them. But with one month until the Gala comes one month to choose who to bring.

Twilight always thought that being able to send the Princess her letters instantaneously through Spike's fire breath was the best thing in the world. Instant correspondence with her mentor and secret crush could never be a bad thing, right? Unfortunately, Twilight has a habit of writing her secrets down on flammable materials. Now her secret's out, so what's a panicky unicorn to do? Panic, obviously!

When your life is as dull a gray as the world that surrounds you, the mundanities can make it all seem meaningless. Sometimes all we need is a little color -- or six -- to reintroduce us to what truly makes life worth living.

*6-16-2017 Edit, added Rainbow Dash tag because it triggered knighty.*

An experiment gone right has successfully left Rainbow Dash's rainbow mane in Twilight's vial. But when Pinkie stops by for a visit and mistakes the rainbow for a drink, she decides that all of her friends must try this amazing creation.

How can this go wrong?

Side effects, of course.

Princess Celestia will at last get a taste of Twilight Sparkle. No, not in that way! The whole Elemental Harmony Squad is involved... no, still not in that way!

Popsicles will be prominently involved... and again, not in a naughty way. The only naughty pony here is Luna.