When Twilight Sparkle and Fluttershy attend a large feast to celebrate the new bond between the former feuding families, Twilight happens to find letters that were between Grub Hoofield and Piles McColt. And unfortunately, she reads them out loud.
I'm a shameless neckbeard who has a knack for writing a LOT of smut. I have an Official Patreon page (Patreon.com/TheVClaw), and I also take commissions to help support myself as a freelance writer.