A/N: Sorry for the long wait! Have a... mostly non-sexual shower (they are trying).
Prompt: Having their hair washed by the other [post-DH]
Washing
Hermione's voice resounded in the small bathroom, exasperated. 'Ron, I really need you to bend lower!'
'What more do you want, woman, I'm getting a stiff neck!' he protested, rising to his full height and rubbing the back of his neck in demonstration. Hermione braced soapy hands on her hips as they stood under the spray of the shower.
'Well, how do you expect me to wash your hair if I can't reach it? Should I get a ladder?'
'Of course not. A stool would do—ow, fine!' he said when Hermione smacked him lightly on a shoulder, and he obediently bowed his head again. 'Hurry up, this is making me dizzy.'
Hermione's hands went to his head again, massaging his scalp and disentangling the strands of slick, dark red hair between her fingers.
'You know, you don't get to complain,' Ron's voice floated up to her, muffled under the pitter-patter of the shower. 'I spent an hour washing your hair—'
'Getting my hair tangled up, you mean.'
'Oi, I used conditioner later and it was fine. But you kept squirming like a wounded Kneazle—'
'Because it hurt!'
'I said I was sorry!'
'Hm. I have to admit, at least you're not moving that much.'
'That's 'cos I'm staring at your tits.'
'For goodness' sake, Ron!' Hermione admonished, leaning back slightly, though she laughed as he reached his arms out to wrap them around her waist and pull her closer again. 'You're impossible. We're never going to get out of here if you keep distracting me.'
'Oh, I'm distracting you? I'm not the one shoving her tits on my face!' He quickly dropped a kiss on one breast and looked up, grinning and wagging his eyebrows. 'You keep that up and I guarantee you we'll never leave this shower.'
Giving him a mock-stern look, Hermione stood on her tiptoes to ruffle his hair and Ron shook his head wildly like a soaked puppy, making her laugh again.
Taking a "non-sexual shower" together wasn't as romantic as that women's magazine had made it out to be… but Hermione had to admit, it had its fun.