Author's Note: This might be the smuttiest thing I have ever written. You have been warned. I didn't even want to post this, I was provoked to. I thought I wrote the smuttiest thing ever, and then this showed up. So, here it is. I'm sorry. It is part 1 of 2. Let me know if you want more. Also, yes, Jem is slightly out of character, but I doubt you're reading this to see Jem in character.

Disclaimer: I own none of these characters!

Major warnings: This story contains M rated situations, slash, and graphic male/male sex. Do not read if that sort of thing offends you. Do not flame me for this, as you have been warned that it could offend you. This is a work of fiction and should be treated as such. If the thought of two teenagers and a warlock having sex bothers you, READ NO FURTHER. If you're still reading, don't forget to review.

Infernal Ideas

Chapter 1

It wasn't that the party had gone on too long, it was only that Jem had drank more than expected. He had finally stopped pining over Tessa long enough to take Magnus Bane up on an invitation to attend a party. Will didn't mind the invitation either, after all, to him, a party meant free alcohol and a chance to socialize with people outside of the London Institute. For Jem, the party was a chance to toss his cane aside and pretend he was like any other normal seventeen year old boy. For Magnus, Will knew it was a chance for the warlock to ogle the blue eyed Shadowhunter boy he was no doubt fond out. What could be wrong with that?

And so it came to pass that Will found himself sitting on the couch in the sitting room of Magnus's townhouse. He was one drink ahead of three sheets to the wind, watching as Jem danced with warlock boys and vampire girls. Whenever Jem was in this euphoric state, he didn't care who he danced with, be them male or female, and he didn't care who he kissed, for that matter. Will had been on the receiving end of Jem's flirtatious kisses (and even more) a time or ten before. If Charlotte knew, she might positively die from shock.

"Do you want to come upstairs?" A voice asked. Magic stung the rune on Will's neck, just below his ear. Two fingers moved the curling black tendrils of hair away from the side of his neck, and then teased at the skin just inside the collar of his shirt.

Will had dallied with Magnus before (Magnus being the only warlock worth dallying with). They were always together at random times for random reasons. One time they fucked in the back room of a mundane pub on a Tuesday night during dinner hour. Will braced himself against the wall, his pants somewhere beneath him, his shirt still on, his legs around Magnus's waist as Magnus thrust into Will hard enough to make him see stars. Sure, they wore glamours, but there had been people around (the fucking scandal!) but that was the sort of insane things Magnus made Will want to do. Magnus was good enough to give Will exactly what he wanted, and was smart enough to never ask for more.

"I have to worry about Jem," Will said, playing hard to get. If the warlock got what he wanted all the time, what happened between them would no longer be worth the wait.

"Bring him," Magnus said. Will's mouth fell open and he didn't need to reply. "Everybody out! Now!"

Jem stopped dancing and turned to Will, his cheeks bright, his eyes far too dark of a silver to be healthy. He wasn't supposed to be taking that much of his drug, but that night, he begged and Will dosed him, hating it and at the same time knowing that every once in a while, Jem needed enough of the drug in his body to help him forget about everything else. No matter the reason, Charlotte was going to kill them come tomorrow morning.

Less than ten minutes later, the three of them were standing upstairs in Magnus's bedroom. Magnus pointed at the fireplace and snapped his fingers, causing the logs to ignite. He poured three glasses of sweet brandy, which they all tossed down their throats. Magnus grabbed Jem by the shoulder and whispered in his ear. Jem smiled wickedly and nodded.

"No secrets!" Will exclaimed.

"You'll find it out, soon enough," Magnus said. "Now you and Jem, off with your shirts." Jem's eyes glimmered as he unbuttoned his shirt and tossed it aside. He unbuttoned Will's shirt next and relieved him of it.

Magnus produced two silk scarves and Jem pushed Will backwards onto Magnus's large bed. Magnus climbed onto the bed with Jem, and together they bound Will's wrists to the headboard.

"You know I can get free from this," Will said.

"Yes, but you won't," Magnus said. He turned to Jem and ran a hand through the boy's silver hair as they began kissing.

Jem stripped Magnus of his jacket, then unbuttoned his shirt and tossed that aside as well. He bent his head down and placed several warm and no doubt moist kisses across Magnus's collarbones. Magnus brought Jem's face back up to his and kissed his lips, sweet and gentle. He put his hand on the waist band of Jem's pants, opened them, and slipped his fingers inside. He pulled open the elastic waist band of Jem's boxer shorts and looked down, smiling. Jem moaned and turned his head to the side as Magnus's lips travelled down the side of his neck, biting in some places, licking in others. Jem gave Will a serene smile.

"What do you think you're doing?" Will asked.

"I'm making you want what you can't have," Jem replied.

"And you're letting him?" Will demanded, glaring at Magnus. He tugged on the scarves but they didn't loosen. Jem and Magus had bound him tightly.

"It wasn't my idea," Magnus said. He shrugged as he flicked his tongue over each of Jem's nipples.

"You're always saying we should try new things," Jem said. "This is new."

"I meant maybe we could try… other positions. Other places, even," Will said. Jem rolled his eyes and leaned into Magnus's caresses just a little more.

Magnus pulled Jem off the bed, and proceeded to pull his trousers down so that Jem stood naked beside the bed. Jem's back was to Will, and Will couldn't help but look over Jem's body. He was so thin, all bones and muscles and not much more. There was a rune between his shoulder blades and one at the base of his spine, as well as one on his right hip. Will had drawn those runes there himself as Jem's parabatai. He marked him as his own without ever having to say a word.

Magnus traced his fingers down arms, pulling him closer. Together, Magnus and Jem were a contrast of colors, of light and dark, tan and pale silver. It was as if every fantasy Will had of Jem and Magnus came crashing together in one unbelievable dream. This had to have been a dream, for as much as Will wanted to move and perhaps participate, he couldn't.

"So what do you want?" Magnus mumbled, just loud enough for Will to hear it.

"I want you to fuck me," Jem said. He pulled Magnus's trousers down and kicked them aside.

"You want him to what?" Will asked. He and Jem had a threesome once before, but this… this was something far more than three school boys fooling around.

"I want you to fuck me and I want Will to watch," Jem said. He turned to Will, a naughty grin on his face. "And not a word out of you."

"I object!" Will exclaimed.

"I said, not a fucking word," Jem said. There was something in his tone that forced Will to close his mouth and fall silent… even as his cock stiffened the slightest bit.

Magnus knelt down on the floor and Jem sat down on the side of the bed. He was close enough that Will could have touched him, that was, if his hands weren't tied. Magnus ran his hands down the insides of Jem's thighs, causing Jem to open his legs a bit more. Jem looked down, smiling, watching. Magnus teased the tip of his tongue over Jem's half hard cock, causing it to spring up in an eager erection. Jem groaned as Magnus took his cock in his mouth and began to suck.

"You're really going to do this," Will said.

"Shut up," Jem moaned. He sunk his fingers into Magnus's head in an attempt to slow Magnus down. Magnus looked up at Jem, his eyes full of want and desire.

"You've tied me up and… James I thought you loved me," Will said.

"Not a fucking word," Jem said. Magnus released Jem's cock, stood up, and leaned over Will.

"Do you want your mouth bound as well?" He asked.

"No," Will said. "You wouldn't." Magnus smirked and Will had his doubts as to what Magnus would do.

"My love has nothing to do with this," Jem said. "Come back, Magnus. That felt good." Magnus kissed Will on the lips, and returned to his place at Jem's feet.

Jem worked himself into a frenzy with Magnus's help. Will laid on the bed, propped up on some pillows, and watched as Jem writhed and groaned. Magnus was moaning as he sucked. His hands were shaking as they moved over Jem's lower stomach, touching him intimately. Will could smell the sharp tang of Jem's sweat in the air. As he watched, tiny droplets of water appeared on Jem's forehead and ran down the side of his face. He finally grabbed Magnus by the hair and wrenched his face away.

Magnus climbed to his feet, a delirious smile on his face. He grabbed Jem by the thighs and lifted him onto the bed, so that Jem fell backwards, his head landing on Will's stomach. Jem turned his head and saw the tent Will's erection made of his trousers, and laughed.

"This isn't funny," Will said, near tears. It was true, it was so easy to cry when one was frustrated, and Will was far more frustrated then he let on. He was fully aroused, with no way to take care of the pressing problem.

"Tie his mouth," Jem said breathlessly. Magnus lifted up another silk scarf. Will shook his head, angry. The warlock was going to pay… eventually.

Jem opened his legs again as Magnus knelt between them. He brought out a bottle of lubricant and applied it to his fingers, then moved them between Jem's legs. Will heard Jem's breath catch in his throat and knew what Magnus had done. So often, Will was so focused on pleasing Jem, he wasn't able to sit back and watch the boy' arousal build. This time, Jem arched his back, not in pain, but in something else entirely different. Jem groaned out loud, something he couldn't do at the Institute. Back there, they had to be quiet. Here? The possibilities were endless.

"Do you like that?" Magnus asked. Jem nodded. He reached over, unbuttoned Will's pants, and rudely shoved his hand inside, grabbing Will's cock with a sweating palm. He began to tug on it, squeezing hard. Will felt his mouth go dry as he started thrusting himself into Jem's palm.

"Yes," Will moaned. "Yes, oh, yes, Jem. Yes…."

"Stop talking," Jem said. "I don't want to hear you talk. That's all you do is talk. Stop." Will turned his head to see Magnus working to prepare Jem. He felt jealous. Magnus was getting every bit of Jem that Will always had. Then again, perhaps that was the point to the torture.

When Jem was begging for Magnus to stop, Magnus did. Jem sat up and tossed a leg over Will, straddling his waist.

"No," Will said. "No, please, no." Magnus smiled and moved behind Jem, putting his hands on Jem's waist.

"Stop talking," Jem said. He kissed Will on the lips and ran his hands through his hair. He kissed him once more and bit down on Will's lower lip as Magnus pressed into him. Will felt Jem gasp.

Jem pulled away and leaned back against Magnus, who took him in his arms and began to run his hands over Jem's body as they moved together. Magnus held Jem tightly so that Jem's back was flush to his chest. Jem turned his head to the side and moaned as Magnus sucked on the skin just beneath his right ear.

Will laid on the bed and watched them lose themselves in one another. He didn't want to admit that it was arousing. He didn't want to admit that watching the two boys he made love with making love to one another was possibly the hottest thing he ever saw. He just laid on the bed and felt his cock ache. He couldn't touch it. He couldn't do anything but lay and watch Jem and Magnus have all the fun.

Then, it got worse. Jem leaned back over Will and began kissing him again as Magnus fucked him from behind, thrusting into him hard and fast. Jem moaned against Will's lips. He touched Will's face, and more than that, he touched Will's body… above the waist only. Meanwhile, Magnus thrust into Jem as Jem stroked himself. Will knew he would be the one touching Jem… if only his hands weren't bound.

"I'm going to come," Jem moaned. He pulled away from Will and looked down, hastening his stroking until he finally came with a quiet cry. Magnus followed with a groan just a few thrusts later. He pulled out and fell onto his side and Jem laid down beside Will, gasping, his skin soaked with sweat.

"Now what?" Magnus asked. Jem smiled and pushed Will's pants down.

Author's Note: There can be another chapter if you want one. I can't promise when it will show up, but I can promise that it will. REVIEW and tell me what you think. Should this continue, or should it not?