Cant recall a lot of details, but I do know it was a darker mind alteration story of a guy being turned into a mare named adora belle. Think there may have been a plot point about mare shortages or infertility in mares leading to them grabbing humans from earth (willing humans for going, less so for the mind alterations). don't think it was very long but I cant recall any real details about title or description and haven't been able to find it because of such.

Sorry if this post is a bit messy/awkward, its quite early here but I wanted to ask before I forgot to again. Will double check to make sure it makes sense tommorow

6532627 Would Perhaps You Haven't Herd [from my own story library] be the story? I'd link but this is an open/mixed group and it was an NSFW story.

6532661
That was exactly what I was looking for. Thank you!

6534809
You lucked out in that I happened to see the post in my feed, and zoned in on the key phrase Adora Belle. I saw it, read the rest of the post, and said, "Hey, that sounds like my story."