Twilight and Rainbow Dash have always loved each other... sorta'. Even though they haven't had any proper romantic interactions, they still seem to go together like two peas in a pod. Or at least it seems like that. Just like any other pairing, they have had zero sexual contact, nor any hints to why they should be together.

But... they still have a crack at it anyway. Oh sweet Celestia...

Before you TwiDash fans call for my head, I like the ship. I'm just (attempting) to sum up a majority of TwiDash fiction.