This story includes a pairing that i have never seen done, and am surprised not to find anything one so read and enjoy. Set with an older Spike x Photo Finish
Photo Finish comes to Ponyville for the first annual Flowers and Friendship Carnival set up by Princess Twilight to find true beauty but is put off by a hard rain. Twilight letting her stay inside of the castle along with others awaiting the festival, but in her pursuit of beauty she meets someone broken by past events and sees the chance to make more beauty.
P.S. This is not a one shot.