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Severus tumbled out of the Floo in the library of Grimmauld Place, grimacing as he uncharacteristically stumbled.
"Severus?" Arthur Weasley stood and approached him, look of concern on his face.
"There was a raid." He winced. Hopefully he didn't have any broken ribs. "Others will be arriving soon."
He was interrupted from adding more by shouts from downstairs, whether from the front door or another Floo, he couldn't be certain.
"Go up to the bath on the third floor," Arthur said as he headed toward the door. "I'll go check on the others then meet you there."
"That isn't necessary, Arthur." Severus grit his teeth against the pain. "I only need a potion—"
"Severus." It was said in the familiar, fatherly tone that was affectionate yet firm.
Severus looked up and nodded. "All right."
"Good." And then Arthur was gone, his footsteps heavy as he hurried down the stairs.
Severus, on the other hand, took his time climbing the flight up to the third floor. He was winded when he reached the newel post and clung to it for a moment, breathing heavily. At least he wasn't bleeding as he suspected both Lupin and Black were.
When he reached the bathroom, he threw off his robes and sat on the toilet to catch his breath.
"The others are more injured but nothing serious," Arthur said as he entered the room, shutting the door behind him. "Molly is taking care of Remus and Sirius in the kitchen."
So we won't be disturbed was left unsaid.
"Let's run you a bath." Arthur flicked his wand at the taps. "You prefer the rosemary and mint bubble bath, yes?"
"It's not bubble bath." Severus shrugged out of his shirt, letting it fall to the floor. "It's a magically-enchanced muscle relaxant."
Arthur poured a cupful into the running water. "Bubbles!"
Severus snorted and then regretted it, the pain in his chest a dull throb now. He began to push his trousers down but found it difficult to manage.
"Let me help," Arthur said softly.
Severus stood still as Arthur tugged his trousers and pants down to the floor, stepping out of them when he tapped his shin. Arthur carefully pulled his socks off and then let his hands run up the front of Severus's legs from his shins to the top of his thighs.
He pointedly ignored Severus's cock as it began to stir and stood. "A nice soak in the tub will do wonders for you." He held out a hand to steady Severus as he stepped into the claw-footed bath, sitting down and laying back. His eyes fell shut as the muscle relaxant in the water slowly began to work its magic.
Severus thought he might have fallen asleep if it weren't for the fact that Arthur was there. He opened his eyes to see Arthur watching him.
"Shall I wash your hair, Severus?" It sounded like a question but it wasn't, not really.
Severus swallowed and nodded.
Arthur smiled and stood up. He moved behind Severus and gently poured water over his head from a large pitcher. Lavender scented the air as he began washing Severus's hair, his strong fingers massaging his scalp as he worked the shampoo into a lather. Severus stifled a moan at the sheer pleasure of his touch.
Much too soon, warm water cascaded over his head, rinsing away the suds. Arthur then moved to the head of the tub and reached in to let the water out.
Severus stood, most of his aches and pains draining away with the bathwater.
"Here." Arthur stood holding a thick, cotton towel and wrapped it around Severus, rubbing him dry through the fluffy material.
"Thank you."
"I told them you needed to rest. The room across the hall is available if you'd like to lie down." Arthur's hands gripped the edges of the towel that met at Severus's chest, his eyes fixed on the patch of bare skin there. He looked up into Severus's eyes. "Would you like that, Severus?"
"Yes," he breathed out.
"Good." Arthur opened the bathroom door and a gust of cooler air made Severus shiver.
Severus followed Arthur across the hall, anticipation building. The moment the door was closed and locked, Severus dropped the towel.
"Isn't this lovely." Arthur wrapped his hand around Severus's cock and gave him a gentle stroke. "Up on the bed, hands and knees. I've been wanting to taste you since the moment you arrived."
Severus obeyed immediately, groaning in pleasure when he felt Arthur's tongue lave a wide stripe across his hole.
He pushed back against him, eager for more, earning a chuckle that he felt more than heard.
"Don't worry, Severus, I'll take good care of you, I always do." First with his surprisingly wicked tongue, then gentle fingers, and then, finally, with his thick cock, pushing inside Severus's arsehole in a single smooth thrust.
Severus cried out, pleasure racing through his body, endorphins easing what was left of his lingering soreness.
"So good," Arthur murmured, his thrusts long and deep, maddeningly slow until Severus could wait no longer.
"Please," he begged, clenching around the man's cock.
"All right, darling," Arthur crooned. He gripped Severus's hips and began to drive them home, slamming into Severus's arse, his cock brushing Severus's prostate with every thrust.
Severus reached for his cock, found it dripping with precome and hurriedly stroked himself, chasing the elusive peak he craved like life itself.
One more thrust, one more stroke, one more—Severus whimpered as Arthur's fingers tightened and his cock throbbed, pulsing into Severus as he came. Severus grit his teeth and followed him, come spurting between his fingers onto the sheets.
When Arthur's cock slipped free, Severus flopped onto the bed, panting.
"That was wonderful." Arthur pressed a kiss to his shoulder, his hand sliding down his side to the curve of his arse, a fingertip just tracing the rim of his leaking hole before pulling away. Severus felt a cleaning spell wash over him and sighed, nodding off before Arthur even slipped out the door.