A/N: Okay, so this is SO way overdue, it's funny. It took me forever to decide what to do, and then I finally decided on this fluffy lemon. ^-^ I hope you all enjoy it, please be nice, as it is only my second one…

WARNING: LEMON INCLUDED-DO NOT READ IF YOU DO NOT LIKE!

Disclaimer: I do not own the Mortal Instruments or any of it's amazingly, amazing characters. Oh! I almost forgot! Towards the end, there's a bit of a song, and that is not mine either. It was written by RidingEdward'sVanquish, and the story is called Magnus' Dirty Little Secret. I encourage you all to read the entire song, and then go to her YouTube account (it can be found on her FF profile), and watch it! It's so funny! ^-^

Magnus watched as Alec said goodbye to everyone so they themselves could go home.

"Tomorrow Izzy," Alec said with a shrug. She frowned slightly.

"But mother and father-"

"Will be fine with it. Just tell them I spent the night at Magnus's." Isabelle's eyes widened slightly as she nodded.

"Ok." Jace smirked.

"Behave children, but have fun," he said loud enough so Magnus could hear them. Magnus raised a hand slightly in acknowledgment before looking back to Alec.

"See you guys later," Alec said happily as he turned around and ran back to his warlock.

"'Behave…Children?'" he questioned amusedly. Alec sighed as they began to walk in the direction of Magnus's home.

"A few days ago, we were on a mission, and Jace heard some mundane woman yell that to her teenage kids. It kind of stuck," he said with a shrug. Magnus rolled his eyes in amusement.

Alec sighed happily as he and Magnus made their way towards his home. They had left everyone else behind at some cross section, after their time at the karaoke place.

"You had fun tonight," Magnus accused suddenly. Alec looked up at his boyfriend dubiously.

"Maybe listening to you…but I don't sing." He nodded his head for emphasis, but looked back at Magnus once more.

"So…you like me singing?" he asked curiously, amusedly. Alec paused for a moment before nodding.

"I like listening to your voice," he said simply. Magnus smiled brightly at this and squeezed Alec's hand, which was entwined with his own.

"I'm glad, because lord knows what we would do if I ever lost it," he said dramatically. Alec rolled his eyes.

"The end of the world," he agreed.

"No need to be sarcastic…I was being honest." Magnus nudged Alec's shoulder, whom merely ducked his head with small laugh.

"So was I," he said just as seriously. Magnus sighed as they turned the corner onto his road.

"So…you're actually staying the night…with your parents knowing?" he asked as he opened his door. Alec smiled a crooked smile and laughed once.

"Did you not want me to say that?" he asked. Magnus's eyes widened.

"I think it's amazing," he said honestly. Alec smirked as they walked through the front door and into the living room.

"I guess so," he whispered, "but it shouldn't matter to them. I'm eighteen." Magnus nodded once before untying his cloak and throwing it onto the bright purple love seat. Alec sat on the pink couch and sighed contently as Magnus laid down, placing his head in his lap.

"You know…I could always sing for you again," he suggested.

"Oh? Are you sure you feel up to it? You seem tired," Alec said with a small smirk. Magnus smiled as he sat up, and spun to face Alec.

"I am, however, that is what a cell phone is for," Magnus whipped out his cell phone, which had sparkles all over it. Alec glanced from the phone, to his boyfriend and back again.

"Not really getting it Magnus," he admitted. Magnus sighed.

"I prerecorded it," he explained as he flipped the phone up and began to vigorously press some buttons.

"Am I going to die of embarrassment?" Alec asked curiously. Magnus smiled and shrugged.

"Possibly, it is about you." Alec grimaced and then looked at the phone with a grimace.

"I'm not sure I want to hear it," he admitted. Magnus glanced up at him through his cat like eyes , lowering his cell phone.

"No?" he asked quietly. Alec swallowed and then smirked internally.

"No…I'd rather just sit here with you," he said as he leaned forward and gave Magnus a chaste, sweet kiss. Magnus made a sound of contentment before letting the phone drop to the floor, and reaching a hand around to grasp Alec's neck.

"Fine with me," he mumbled. He lightly ran his tongue over Alec's lower lip, before the boy slowly opened his mouth, allowing Magnus the entrance he had silently been seeking. Magnus's tongue ran over Alec's softly before exploring the rest his mouth with complete thoroughness.

Alec sighed as he leaned backwards so Magnus slowly crawled on top of him. They broke the kiss briefly, both partners needing air before Alec grabbed the back of Magnus's neck and pulled him back down, this time bringing his upper lip between his teeth and running them over it softly. "Alec," Magnus mumbled as a shudder ran through his body. The shadowhunter smiled as he kissed him fully and let his hands wander.

He reached to the hem of Magnus's shirt and tugged it up until he reached the warlock's shoulder. "Magnus," he mumbled around their kiss. Magnus broke the kiss quickly and twisted out of his shirt, throwing it to the floor before pouncing back onto Alec's now kiss-swollen lips.

"Not fair," the warlock mumbled as he fingered Alec's sweater. Alec chuckled lightly before slipping out of his own top and throwing it down to join Magnus's discarded one.

Magnus smiled in delight before kissing his stomach, just above his bellybutton.

"Magnus," Alec whispered huskily. Magnus lifted his head slightly and threw Alec a spare glance before running his tongue over the boy's nipple. Alec let out a deep moan as his head hit the arm rest of the sofa, and his hands tangled into Magnus's hair, pulling lightly on the spiky tips. Magnus smiled before sucking it into his mouth and lightly nipping it. His hand came up and lavished the other with the same attention, slowly rolling it between his finger tips. "Not fair," Alec muttered back. Magnus smiled before switching his mouth to the other nipple and rolling the first in his other hand. He blew on it lightly before making his way down to Alec's jeans, and latching onto the zipper with his teeth. Alec groaned heartily and raised his hips slightly as Magnus pulled the zipper down and quickly discarded both his pants and his black briefs. He slowly kissed each of Alec's hips, letting his breath hit his arousal, but nothing more. "Magnus," Alec hissed. He arched up once more, begging Magnus to release him. "Please…" Magnus smiled brightly as he expertly took Alec's length into his mouth and sucked, hard. "Unh….." Alec's hands wrapped more firmly into his lovers hair and pulled on the locks, keeping him rooted there. "Don't…stop…" he gasped. Magnus hummed happily, which only made Alec buck up into him. "M-Magnus," he whispered. His hands massaged the warlocks scalp. Magnus glanced up at his boyfriend, and couldn't help but smile. Alec had his head thrown back in pure bliss, and eyes shut tightly. He took in Alec's length, all the way to the base, and then slowly bobbed back up, before releasing his from his mouth completely. He licked the slit on the tip, and then licked down the length again before slowly grabbing Alec's leg, and lifting it up and around his side.

He snapped his fingers once, and a bottle of lube appeared in his grasp. He quickly squeezed some onto his fingers before rubbing them together.

"Alec," he mumbled happily. Alec glanced down at him, and smiled through his hair, which had flipped into his eyes slightly. Magnus smiled before pushing one digit slowly in, and swirling it around. Alec groaned and pushed down on it, moaning once more as Magnus quickly added a second finger. He scissored the two slowly, and then with a quick nod from Alec, added the third.

"Magnus…go," Alec urged. He was completely ready to feel his boyfriend in him, and always became impatient with prepping. Magnus laughed once before pushing the three fingers a bit deeper and then curling them up and around. Alec gasped as his prostate was hit, and his vision blanked out. "Magnus!"

Magnus smirked as he hit the spot again and watched as his lover convulsed with pleasure. After a few more moments of simply teasing the boy beneath him, he pulled his fingers free and placed himself at Alec's entrance, quickly lubing himself up before dropping the tube to the floor, next to his cell phone.

"Magnus," Alec mumbled happily. Magnus nodded before pushing himself in, groaning at the tight heat.

"Oh Alec," he moaned. Alec pushed up, only bringing Magnus in further before wrapping his legs around the warlocks middle.

"Please move," the shadowhunter begged. Magnus laughed silently.

"Anything for you," he muttered. He pulled out carefully, and then pushed back in, slowly, and teasingly. Alec groaned as his eyes rolled to the back of his head.

"Faster," he pleaded. Magnus smirked as his pace picked up, pulling out and pushing in, harder and faster. Alec's hands gripped Magnus's arms as Magnus grabbed Alec's length and pumped in time with his thrusts.

"Oh my…" Alec cut off and clenched his eyes as he felt the pleasure building, and readying to explode.

"Come for me," Magnus whispered huskily. Alec groaned as he shot into Magnus's hand, and soon felt a similar warmth release inside of him, indicating Magnus's own release.

They laid there for a moment, listening to the other's panting breaths before Magnus slowly pulled out of his lover and carefully fell atop him. Alec let his arms go up over the arm rest of the sofa as Magnus snuggled into his neck.

"I love you, you silly shadowhunter," Magnus whispered sleepily. Alec smiled as he brought a hand down and ran it through Magnus's hair.

"I love you too, you sparkly warlock…"

Alec blinked sleepily as a song slowly permeated his sleep filled mind. He glanced down, and smiled at the sight of the top of Magnus's head…and then frowned when the words of the song finally hit his ears. It was Magnus's cell phone. Alec bent slightly to look at the floor and blushed, it had started playing seemingly by itself.

"I'll keep you my dirty little secret…Hide under your bed…I won't tell you and surprise you when you go to sleep…Cuddle up beside you…Use my magic on you…So that I can have you…And rip off your clothes!"

"Magnus!" Alec hissed. Magnus smiled sleepily before grinding down onto Alec, making his lover groan once more, and arching into his neck a bit more, only succeeding in making the shadowhunter blush a deeper red.

"I needed words that went with the song," he said simply. Alec shook his head amusedly before reaching down for the cell phone and turning it off.

A/N: ^-^ Happiness overwhelms. I hope you all enjoyed this fluffy bit of lemon! It made me happy! ^-^ Again, I'm sorry it took so long, but I hope this made it worth the rate. I think we all need some more M rated Magnus/Alec fics. ^-^ So long, and I'm sure I'll hear from most of you soon! R&R! ^-^