(Warning to new readers, the comments are chock full of spoilers.)

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Rainbow Dash's dad, Blue Streak, has been lonely and sad ever since Firefly passed away. Rainbow has tried her best to cheer him up, but to no avail. On her latest visit, she finds out that her dad has been seeing someone and is now happier than ever. She couldn't be happier for him, until she found out who it was.

Editing and idea provided by: Bronystories.
Writing (mostly) done by me. Special thanks to him for being awesome.

The Princesses find an alien creature barely clinging to life at the scene of a terrifying crash. Can the Combined Power of the Elements of Harmony save it, or more importantly, should they save it? Will the arrival of this strange creature tear Equestria apart?

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https://tvtropes.org/pmwiki/pmwiki.php/FanFic/Article2

Twilight Sparkle wakes up one morning to a harsh dose of unreality. She is stranded, without her friends, on an island which matches no known locale on Equestria. Surrounded and harried on all sides by the alien and the dangerous, she will find her mettle sorely tested, and find perhaps that the best friends you will ever have in your life are the ones you make when your back is to the wall...

Thanks to CedricBale and noobie56xx for tracking down the name of the artist so I could give them credit.

(2nd Person POV) Your childhood started out just like any other. You had friends, you attended school, you had a mother and father. It was all taken away from you. You have no recollection of your childhood, only the scene of a traumatic event. Losing all hope in recovering, you leave to a small, secluded town known as Ponyville, hoping to isolate yourself. You'll find out that all you needed was a little color to revive those memories.

Edited by: Sleipnir and DoctorBrony

Princess Luna arrives in Ponyville and begins to do wonderful things in the life of Twilight Sparkle. They become close friends...maybe even more, but when Twilight discovers that Luna may be after the throne the unicorn must choose whether to follow her head...or her heart.

After an unknown accident Twilight Sparkle and Rainbow Dash awake to find themselves sharing the same body! Now they must struggle to hold themselves together as their world is turned upside down. How long can two ponies exist in a single mind? It’s a race against time as they search for answers before it’s too late. When all is said and done, you’ll never look at Twilight Dash the same way again.