A/N: Well if you've got this far you know what my stories are like and you enjoy them. So enjoy!
It's a bit of a jump in time from chapter one, but basically takes the premise that Remus is in a (somewhat fucked up) relationship with Sirius, but sneaks off occasionally to be Snapes bit on the side.
Lust
Snape hated Quidditch, hated it with a passion. Partially because it seemed to him to be the most pointless game in existence, partially because James bloody Potter was so good at it, but mostly because Sirius' idea of a good after-match celebration was to come and beat the crap out of him.
At least Black had failed the beater tryouts. Snape shuddered to think what the boy would be like with a beaters bat in his hands. He left the stands as soon as he could, hurrying back towards the Slytherin common room, hoping no one would see him, hoping he'd get back in time before...
"Going somewhere Snivellus?"
Crap.
"What happened?" Remus asked, half shocked, half worried. Snape shrugged, sitting hunched under the tree. Slowly, Remus reached out a hand to run slim shaking fingers down the side of his face, "Was it…?"
"Yes." Snape flinched away from him, staring moodily at the lake, "Your pretty lover-boy thought it was funny."
Remus bit his lip, wishing he could have a go at saying 'ex-lover' and sound convincing. "I'm sorry."
Snape turned to stare at him. "How sorry?"
"What do you mean?" Remus felt a sudden squirmy feeling in the pit of his stomach. He knew what this meant.
"Tonight. In the Room of Hidden Things. The one place you didn't find on that bloody map you made. I want you there."
"I can't." Remus bit his lip. The squirmy feeling was still there, but somehow it was an excited feeling as well. Something in him heard the possessive desperation in Snape's voice and loved it. Outwardly he was edging away, but something inside him roared.
"Why not?" Snape demanded.
"The day after the Quidditch night? Sirius will... still be awake. Him and James. They'll stay up late." Sirius will want me. He was bad enough last night, but he was drunk then. Tonight he'll be sober; tonight he'll want me crying in his arms by the end. He'll want me sobbing for release, he'll want control, and oh god, he's not going to be gentle about it.
"Then wait." Snape sneered at him, fully aware of what was in his thoughts. "Wait until they've... fallen asleep. Then come to the Hidden Room." I can wait. I can wait until you stagger in with Sirius's smell all over you. Sirius's leftovers, but you'll pretend it hasn't happened, so I'll pretend it hasn't happened. I'll grab at the same bruises, tear at the same raw skin and fuck you just as hard. And all the time we'll both pretend that I'm the first to take you that night.
And I'll hate myself for it. And I'll hate Sirius for it. But most of all I'll hate you for standing there and taking it like I always take it.
The more I hate you, Remus Lupin, the more it's going to hurt.
There was something wild in Snape's eyes now, something feral. Slowly Remus nodded.
"I'll be there."
"Good."
It was late. Snape curled up on the bed, shivering. It was late and Remus wasn't here, and he knew what that meant. Sirius. He didn't mind, how could he mind, when any minute now Remus would walk in, uncomplaining, and lay himself down in the Room of Requirement and let Snape do whatever the hell he wanted. How could he mind, when in less than an hour he'd have Remus' hair pulled tight around his fingers and Remus' wrists trapped under his hands and Remus, all of him all around, all there, all willing, how could he mind...
Slowly, nervously, the door creaked open.
"S-Severus?"
Snape didn't look up. "You're late."
"Sorry. I got... delayed."
He smelt of Sirius. Because nothing that Snape owned could be his and his alone. Lilly was Potter's, his books were second hand, his lover was second hand.
"Come here."
Remus walked over and lay down in front of him. "Sorry." He felt awkward and awful, and guilty because all he wanted to do was sleep; he was tired and sore and he knew that it made Snape even more angry when he comes in with Sirius all over him. He couldn't cope with angry Snape, not now, not tonight.
Cool fingers pushed under his chin and lifted his face up. "You've been crying."
"Y-yes," Remus whispered. There seemed no way to deny it. What was Snape doing? It was an unspoken agreement that they never mentioned Sirius, never talked about what Remus got up too when he was late.
Roughly Snape pushed the tears away with his thumb. "Why?"
Remus' eyes darted around the room, hunted, cornered, "Uh… Severus?"
"Why!" Snape nudged his legs apart and fumbled at his belt. Remus dropped his head down onto the pillow, trying to sniffle quietly. "You always," Snape pulled his trousers down and started grabbing at the buttons of his shirt, "smell of him."
One of the buttons tore off, hitting the side table with a dull thud. Snape sat back, his face flushed. "Take it off."
Quickly Remus pulled off his shirt and the remains of his trousers, until he was shivering in his boxers.
"All off."
"What?"
"I want you naked, Lupin, naked and over the bed."
Remus gave a small nervous swallow but obeyed. Snape stared down at him, running his hands over the pale scarred body, and pushing roughly wherever he found a bruise. "Does he always mark you? Are you his then?"
Remus gulped back the tears, not certain what he was meant to answer.
"Open your legs. Wider."
He'd never felt like this before. Sirius didn't give orders; he just took, painfully and unthinkingly. The part of him that wasn't gasping as the cool air hit parts of him that were still quite sore, was growling in pleasure at every demand.
Snape grabbed his hair, pulling his head up, "Who do you belong to?"
"You." He didn't even have to think.
"Who do - shit Lupin, you're hard." Snape blinked, confused for the first time that night. "You... you're... enjoying..."
Whimpering, Remus pushed his arse out, not certain what he wanted, just that he wanted to Snape to do it, to take him, to own him. To have that lovely sneering voice in complete control, complete ownership. The wolf could see it. Snape might be stringy and pale, he might look a bit like a plant would do if you let it grow in the dark, but the wolf could smell Alpha a mile away.
Snape's fingered teased around him, making him moan, and then shoved down deep until he wailed. Then Snape's other hand was grabbing at his cock and Remus felt something terrific go off in the pit of his stomach. Snape rubbed against him, smaller than Sirius but somehow sweeter. And then the hurried snapped order, "On the bed, keep your fucking legs open."
He rolled over to face Snape, who gave a sneer of disgust and flipped him back over.
"Do you really think I want to see Sirius's soiled goods while I'm fucking you?"
Remus moaned desperately, rubbing himself eagerly against the sheets and then screaming in delight and agony as Snape shoved himself deep into him. Snape might be smaller, but he made up for it by knowing exactly which angle was worst, exactly which parts to squeeze and strike to make him howl.
But then, then, just as the tears were flowing freely, Snape's hand sneaked onto his manhood again and Remus' eyed rolled into the back of his head. He couldn't remember a better time, a sweeter agony, and Snape was still doing all the worst things he could think of and laughing, a high mocking panting laugh. Remus felt the pressure building up, Snape was getting more frantic, it hurt like hell but suddenly in a wonderful magical burst, it didn't matter any more, nothing mattered anymore and they both collapsed in a gasping empty heap.
The pain returned as the afterglow faded. Remus gave a whimpering sob which turned into tears again as Snape rolled over and pressed against a bruise. "Having fun there were you?"
Remus nodded uncertainly; it didn't seem worth trying to lie about. Snape's arm curled around him and pulled him close. "Stay here tonight."
Remus froze. "What?"
"Stay here." Snape repeated, sounding slightly desperate.
"But..." Remus stopped. How could he mention Sirius after this? He felt guilty even for thinking about him. This was different to Sirius, this was more, this was sweeter, this was something Sirius had no part in. Besides it was none of Sirius's business what he did at nights, he could say he'd been in the library, working.
That's not an excuse he'll ever believe thought a reasonable part of his brain. He ignored it. Tonight was for him and Snape. He'd deal with Sirius tomorrow.
A/N: Scarlet Vampyre wrote the next part of this, and there's a fourth part after that. If you want I can ask her if she's happy for me to put it up...
