Discord and Rainbow had no idea a relationship between the two of them was possible, given one is a well known flier and savior of Equestria while the other is a literal God of Chaos. Two beings that couldn't possibly have anything similar with one another.
But even in certain situations, love can come in different shapes and forms.
I noticed the complete lack of DashCord fics around the site, so ta-da! I have created a one-shot. If this goes good, I may continue these little one-shots.