Hmmm, that makes sense. So they were in parties together before without any real smutty stuff happening between the two of them, but obviously Arty has a bit of a reputation amongst "Certain Circles," so when he was looking for a Combat-Class to help him get those cosmetics (Maybe that's where he got the braided-with-flowers hairstyle and the cape he's sporting now?), Dorn was the one who agreed to help him out in exchange for some "Alone time?" :P