They weren't always a couple... their first meeting Shyvana was trying to kill Jarvan IV.
I was bored and had nothing better to do, so I started sketching. Ended up with this, because I've been cleaning Cataclysm up and just read this scene again. *-* Decided to work on some poses. I might eventually clean it up, maybe add some color and some better lines, but for now... meh.
Jarvan and Shyvana, copyright Riot Games.