Shadow and Rouge are actually boyfriend and girlfriend, because number one, Rouge is the only woman that can tame Shadow. He's got some major baggage, and Rouge is the friend that sticks by his side. That's what he needs. And secondly, the fact that Shadow is willing to risk everything to rescue Rouge shows not only that his heart still works, but there's also a place for Rouge inside of it. Plus, the people who ship Knuckles and Rouge doesn't know what it's like to argue and fight with a loved one, and far behind for any Sonic related stuff, and Knuckles is already with Julie-Su who's his real girlfriend. And no, I'm not one of those fucking idiots to think that couples fighting and arguing with each other means that they love each other. That's not true, I know Julie-Su and Knuckles are already a perfect couple, because Julie-Su is the only one that cares about him, but I like Shadouge. Shadouge is better than Knuckles x Rouge because Shadow and Rouge bonded and properly communicated with each other, Knuckles and Rouge does not.