When you were dropped into Equestria, fitting in was pretty difficult. Ponyville residents got used to you quickly thanks to their frequent brushes with strange characters, but the rest of Equestria was less welcoming.

Twilight wanted you to feel comfortable and accepted if you traveled away from Ponyville, so she devised something.

A transformation spell to change you into a pony at will, controlled with an activation phrase...The only catch is that the transformation is a mare, since Twilight needs to make the body template from something she is familiar with. It took months to get used to, but you learn to live in Equestria from two sets of eyes.

One night, you take your pal Soarin on a bar crawl to help him get over his latest rejection from Spitfire, then get an idea. If Spitfire won't give him the time of day, you will.

As a mare.

Warning:
Clop. Mare x Stallion.
Features willing and reversible Man-to-Mare transformation.
Written from a 2nd person female perspective.