On a dare by Luna, Celestia cast a love spell on Equestria, causing some crazy yet interesting pairings...of course, the princesses became affected themselves, falling in love with a certain student of hers and a speeding pony.
Pairings: Applejack x Rarity, Rainbow Dash x Princess Luna, Twilight x Celestia, Pinkie Pie x Fluttershy, Sweetie Belle x Scootaloo, Apple Bloom x Diamond Tiara

The fanart is made by this author: http://bri-sta.deviantart.com/art/My-Beloved-Student-coloured-212783958