*Posted with Demon Eyes Laharl's permission, of course. I would strongly recommend giving his work, Gentlemen for Mares a look first before giving this a glance, it really is a fantastic read.*
Set near the start of Human-Pony relations, a human musician is one of a test group sent out among the ponies as part of an exchange program to learn more about their society. This is the tale of his encounter with a certain mare whose fascination with humans will lead to an experience he'd never have dreamed himself getting into.
And he once got married for a muffin.