This story is a sequel to Honey Pie
Pinkie Pie and Sweetcake ought to be able to live happily ever after. After all, he helped save Ponyville, and Celestia herself publicly acknowledged him as her subject, despite the fact that he's a changeling. The ponies of Ponyville should welcome him with open arms. It turns out, however, that the fact that some of them don't is going to be the least of his problems.
Cover art by dreamingnoctis.