It has been a pretty popular topic on the fandom side, what with all of those "looks" Rarity and Applejack tend to give each other across Rollercoaster of Friendship. Turns out, it really did have an actual foundation behind the scenes. While the show itself didn't fully cross the boundaries, behind the scenes they were all for that Rarijack.
Check out the tweet below!
You can find the tweet chain over here.
