This story is a sequel to Second Verse, Same as the First
Wob Niar is a changeling, split off from the hive and possessing the memories of the late Rainbow Dash. She wants to find her own identity, her own life.
Fluttershy is a Pegasus, recovering after the loss of her closest and dearest friend. But she had been hiding a secret from her, from all of her friends: She likes mares, and had a small crush on Rainbow Dash for a very long time.
These two will fall in love, of course. But they'll need to keep it a secret from their friends, especially an increasingly paranoid Pinkie Pie...