When We Danced: Protecting You by Rumors
(Ron and Luna)
Disclaimer: Not mine, just borrowing.
Ron dances like such a man. The moves are a bit off and nothing quite looks like it's supposed to, but Luna doesn't complain so he gets away with it. As long as he doesn't step on her feet, she's fine. Even then, it isn't that big a deal. He's having fun, not caring how stupid he looks (and he knows he does), and that's the important thing.
Luna dances as though she's underwater, slow and languorous. Her eyes are slightly unfocused, but when she looks back at him the world is sharp and clear. She takes time to ponder each move and selects the right one for the moment, if not for the music. They are an odd pair to watch, but somehow they work.
And when the song is a slow one, he holds her, not bothering with the steps his mother drilled into him when he was young (they may not have had much but Molly Weasley was bound and determined to have all of her children at least know all their social niceties). He holds her like he'll never let go and will protect her from all the harm and evil in the world. But she's holding him, just as unwilling to let go, protecting him from himself and all the evil he can't see.