you were a pony who lived with fluttershy near the everfree forest, she said she just found you and don't know how you ended up there, one day, after a few weeks alone with the animals fluttershy, she says she's going to show you her best friends, fluttershy takes you to ponyville, but the moment you take a few steps into ponyville, a pony welcomes you in the most lively way possible

The pony: HELLO!! You're probably new here, right?! smiling widely

Fluttershy: this is pinkie pie