A/N: Thank you so much to everyone who's stuck with me on this one. I appreciate more than you know every follow, every favorite, every review, every sign that this story speaks to others besides myself. I know it isn't a popular "pairing", but I knew I couldn't be the only one who saw the beauty and the potential of Sterydia. :) Thank you for joining me on this journey. 3

"I don't want to go to school tomorrow," Stiles whined as he collapsed on the couch, his long limbs sprawling across all three cushions.

Lydia rolled her eyes. "Sweetie, you've had three whole months off. One more year of high school isn't going to kill you."

He sulked. "A year of high school in Beacon Hills might," he grumbled.

Derek shrugged. "You have a whole pack of werewolves committed to keeping you safe. You'll be fine."

"Two, Derek. I have two werewolves. Isaac doesn't give a rat's ass about me and Ethan and Aiden would rather eat me than protect me."

"You know Scott will keep the two of them in line. They want to be part of a pack so badly they'll do whatever he tells them to do, even if they hate every minute of it," Lydia declared. "You're the best-protected non-supernatural being in Beacon Hills."

He smirked. "At this point I'm actually more worried about passing my senior year than surviving it."

Lydia scoffed. "Please, Stiles. You have me around to tutor you. If you get anything less than straight A's I will be personally insulted." She reached into her bag and pulled out a pre-calculus book. "We can get started now, if you want. You're taking pre-calc this year, right?"

Derek laughed at the look of disgust mixed with horror on Stiles' face. "I think the last thing he wants to do is look at a textbook right now, Lydia. School starts in fourteen hours. Let's give him one more night, stress-free."

She hmmphed, stowing the book back in her bag before giving Stiles a stern look. "Schoolwork is going to be a priority this year," she warned him.

Stiles groaned and covered his eyes with his arm, leaning back into the couch cushions. "I can break up with you, you know," he threatened, and Derek reached over and smacked him across the back of the head.

"Shut up, Stiles. I can't believe you could even say that with a straight face," he said with a roll of his eyes.

Stiles lifted his arm off one eye and peeked out from underneath it. "Me either," he admitted sheepishly. "You know I love you, Lyds."

"Damn right you do." She reclined into the couch and cast Derek a speculative look. "So what are you going to be doing this year while we're in school all day?"

"Brood," Stiles supplied helpfully, and Derek smirked at him.

"Actually, I, um." He faltered, not sure how they were going to react to his announcement. "I got a job at the school." Their eyes popped open simultaneously, wide as owls, and he winced.

"What on earth could you possibly be qualified to do?" Stiles blurted out, and Derek made a face at him.

"Head basketball coach," he mumbled, coloring slightly. "Coach Finstock is being spread really thin this year and needed some help. Basketball was the one thing he was most okay giving up, and he recommended me to take over."

Stiles groaned. "This means we're going to see you at school every day and not be allowed to touch you."

Lydia frowned. "Isn't there a legal issue here?" she asked. "You'll be having sex with students."

Derek shook his head. "You're both eighteen, I'm not actually a teacher, and neither of you is on the basketball team."

"Still, I think it would be best if we continued to keep this quiet," she replied, clearly unnerved by the idea. "I don't want you getting in trouble, and I certainly don't want any scandal attached to my name while I'm applying to schools."

The off-hand mention of college had a visible effect on Stiles, who looked uncomfortable and anxious. Derek realized he would be uncertain of his place in Lydia's life when she left. "Where are you thinking of applying?" he asked, hoping to help put Stiles' mind at ease.

She shrugged, trying to appear nonchalant. "The Ivies, of course. Stanford, Duke, Georgetown, NYU, MIT."

All the schools she rattled off were top-tier, as Derek expected, but he felt dread overtaking him. "All of those schools are on the East Coast," he said quietly. "Except Stanford."

Lydia glanced from one somber face to the other before letting out a breathless little laugh. "If you two think I'm leaving you behind, you're both crazy," she stated firmly. "Wherever I go, you're going too. If that means I go to a different school, I don't care. There are good schools all over the country."

The relief on Stiles' face was mirrored on his own, Derek was certain. "We'll go wherever you want," he replied. "We wouldn't dream of holding you back." He glanced at Stiles to gauge his reaction, though he felt confident speaking for the both of them.

He wasn't disappointed, as Stiles was nodding his head vigorously. "Absolutely, Lydia. You're going to do great things, so we'll go wherever you need us to."

She bit her lip. "I was also sort of thinking about maybe the School of Mines," she offered hesitantly. "They have a fantastic applied mathematics program and I could double-major in biochemistry."

Derek huffed out a laugh at the blank look Stiles was giving her. "She's smart," he clarified helpfully, and Stiles made a face at him.

"No shit, Sherlock." He rubbed his hands together. "So, where are we going?"

"Colorado."

"But Colorado is cold," he protested automatically.

Lydia shook her head. "Sweetie, anyplace that isn't California is going to be cold to you," she pointed out with a grin. "Unless we do Arizona or Texas, and I'm sorry, but no."

"Besides, Colorado is beautiful," Derek added mildly, "and the mountains are great for hiking and skiing."

Stiles rolled his eyes. "Oh great, things I don't excel at even a little bit," he sniped.

"You'll like it more than you think you will," Derek reassured him. "And it's only cold in the winter. You'll probably love it in the summer."

Stiles heaved a long-suffering sigh. "If that's where you want to go, you know I'm there," he conceded. "But Duke is sounding better and better all the time."

"North Carolina has hurricanes," Lydia reminded him, and he threw his hands up in exasperation.

"This country's weather patterns suck," he groused, and she laughed.

"Derek's right, you'll love Colorado." She grinned mischievously. "Besides, think of mountain cabins, cozy fires, and the three of us cuddled together for extra warmth."

He brightened, and Derek shook his head in fond amusement. "Apparently you've sold him on the idea," he remarked dryly.

"Sex is a powerful motivator," Stiles acknowledged with a sheepish shrug. He slid a hand around Lydia's waist and pulled her closer. "Speaking of which…"

She laughed and pushed him away playfully. "We have to be at the school in just a few hours, remember? I'm certainly not going in for Senior Scribe with post-sex hair."

"That's what showers are for," he cajoled, and she stared him down.

"Four hours is not enough time for us to have sex and for me to shower and re-do my hair and makeup," she protested.

Derek watched the exchange with interest, hoping Stiles would win the argument. When it appeared he was losing, Derek decided to step in. He lifted himself out of the charcoal-colored recliner and eased down onto the arm of the couch, next to Lydia. She glanced up at him warily and he employed the wicked smile he knew neither of them could resist. "By the time you two get done with Senior Scribe, it'll be too late for you to come back here," he reasoned. "Don't you want to start your senior year off with a bang?"

Lydia groaned at the horrible pun. "I'm not going to win this one, am I?" she realized with a fatalistic sigh.

"You win almost everything, Lydia," he returned easily, his eyes warm. "Everyone has to lose sometimes."

She gave a melodramatic sigh and then proceeded to lift her top over her head, tossing it over the back of the couch with a beaming grin. "I usually don't like to lose, but I think this time I can make an exception."

The scent of Stiles' desire flaring made him groan, and he could feel his jeans getting tighter as he watched his boyfriend close the distance between himself and Lydia, dipping his head to take one erect nipple between his lips. Her arousal spiked instantly and Derek swore their names would be listed under "cause of death" on his death certificate someday. He'd been with women where the sex was heady, powerful, but never this intoxicating. He'd never had this nonstop need, this craving, that he had for the pair of teens who had slipped under his skin and taken over what felt like his entire existence.

Derek watched as Stiles and Lydia kissed, their embrace easy and affectionate while still overflowing with passion and desire. He itched to tackle Stiles' jeans, to unbutton them and slowly slide the zipper down, to feel the lift of his hips while he allowed Derek to tug them down his legs. He wanted to see the outline of his erection in the briefs he'd begun wearing when he realized how much Derek preferred them. He wanted to feel that velvety soft hardness on his tongue, between his lips, inside his fist.

But he wanted to watch, first.

He watched as Stiles' fingers slipped under the hem of Lydia's skirt, dragging the material up her soft, silky thighs, and he swallowed hard when Lydia's hand joined Stiles', helping him pull the material up faster. Her hips shimmied slightly and Stiles took the hint, lifting his hand from her skin and hooking his finger in the waistband of the skirt. Derek eased in beside her and unzipped the back of it so she could lift her hips and Stiles could tug it down her legs.

When the skirt was off her legs spread automatically, and Stiles wasted no time in dropping to his knees between them, palms on her thighs, thumbs running over the sensitive inner skin. She shuddered, head dropping back onto the couch, eyes locking on Derek's as he hovered over her with a slight smile on his lips. Hers parted and Derek swooped down, capturing her mouth under his as Stiles' tongue disappeared between her silky folds. He swallowed her gasps as Stiles worked his tongue into her, his own lips brushing over her clit as he stroked, fingers joining his mouth to bring her to the edge.

Before she could come, she pushed Stiles away and Derek pulled back. "I need one of you in me," she demanded, her voice breathy. "Fuck me."

"Happy to oblige," Stiles replied cheekily, and Derek and Lydia both rolled their eyes at him. Derek watched as Stiles stripped quickly and lay back on the carpet (they almost never made it to the bed), and Lydia slid off the couch to straddle him. They wasted no time before Lydia sank down onto him, his cock disappearing into her with ease, and her palms were flat against his chest as she lifted her hips and dropped down while Stiles drove up into her.

The zipper on his jeans began to feel ridiculously tight and he slid it down impatiently, aching for relief from the strain of his cock against the denim. Stiles' gaze flickered with interest to where Derek was reaching into his own underwear to stroke himself. His mouth fell open as Lydia continued to ride him, and Derek saw a marvelous opportunity.

Sinking to his own knees, he eased down over Stiles' face and groaned when Stiles immediately reached up to close his lips around Derek's cock. Derek's balls hit Stiles' cheek as he filled the younger man's mouth and throat, and he only choked a little. His gag reflex had improved significantly during the time the two of them had been fucking the hell out of each other, and now he could deep-throat almost without needing to breathe.

"Jesus, Stiles," Lydia moaned, and Derek tore his attention from the sight of his cock disappearing into Stiles' mouth to watch Lydia's movements. Her hair was tumbled around her shoulders, her cheeks flushed, her eyes closed. One hand had come up to play with her nipple while the thumb and forefinger of her other hand wrapped around Stiles where they joined. She squeezed him as she slammed back down on him, staving off the orgasm Derek could tell was impending.

"I want to taste him," he broke in, and both Lydia's and Stiles' eyes popped back open to stare at him. He smiled, pulling back from Stiles' greedy mouth and scooting down his body, inhaling the scent of them mixed together. His. His pack, his mates, his partners. He'd known he was nothing before, he just hadn't understood it was because he didn't have them yet. He'd been nothing without them. He was everything with them.

The way they often looked at him, at each other, told him they both knew that.

Lydia slowed the rolling of her hips so she could ease off of Stiles, and Derek closed the distance between them immediately. He bent his head and took Stiles into his mouth, the flavor of Lydia bursting onto his tongue, and he could smell the fresh heat rolling through both of them. Mumbled curses tripped off of Stiles' tongue as his hand fisted in Derek's hair, tugging less than gently as Derek continued to bob his head, swallowing Stiles and licking the taste of Lydia from his length in turns.

"Fuck, Derek, I'm going to come," Stiles grated out, gasping, and then Lydia was there, locking her lips onto Stiles', and they licked and sucked at each other for a few brief seconds until Stiles jerked, come spilling down Derek's throat. Derek swallowed through every spurt until Stiles was finally drained, and Derek was hard, red, dripping, and aching with need.

He was ready to take himself in hand and stroke himself to completion, something he enjoyed doing while watching Stiles and Lydia (though they rarely gave him the opportunity), when Lydia grabbed his hand and tugged him on top of her. She lay back, looking up at him with innocently wide, yet somehow wicked eyes, and he slipped inside her without another thought.

He stroked forward, bracing himself above her while her eyes fluttered shut with bliss, rocking into her steadily, and she cried out on every thrust. Derek's arms trembled with the need to let go, to come inside her and fill her with his seed. He knew she was on birth control, but it didn't stop him from fantasizing about one day being the head of his own pack again, a pack made of family. Stiles and Lydia had given him that, the hope that he would have his own children and be part of a large family again.

Thoughts of their future children flew from his mind when he could feel Stiles moving behind him, spreading his cheeks, and Derek shuddered. "What are you doing?" he croaked, his throat dry as Lydia squirmed underneath him, lifting her hips to meet his as she got closer to her own release.

"Something I've always wanted to try," Stiles admitted. His lips pressed against the tight ring and Derek nearly came just from the feather-light touch. "Is this okay?"

"Fuck, yes," he ground out.

Stiles needed no more encouragement and his tongue flicked out, tracing the edges of Derek's hole, and Derek had to bite down on his cheek to keep from spilling himself into Lydia. She grinned up at him, her mouth closing with difficulty as it tended to fall open during her gasps and moans, and he leaned in to part her lips again, licking into her and feeling her teeth against his tongue.

Stiles has progressed to driving his tongue into Derek's ass, and he shuddered reflexively. "Fuck, Stiles, you're going to kill me," he gritted out breathlessly, and he could feel Stiles smile against him before diving back in, licking and thrusting until Derek could feel that squeezing sensation in his groin, the heat and the pressure as his release swelled inside him, and he barely had time to reach between them and thumb at Lydia's clit before he was splintering.

He came inside her, his vision shrinking to a tiny black pinprick as the fast, hot rush of semen filled her, and her lips parted to release breathy sobs through the next several thrusts. When he finally collapsed against her, body trembling lightly from the intensity of his orgasm, she clutched at him, arms wrapped tightly around his shoulders.

"Fuck," Stiles mumbled, flopping over onto his back. Derek rolled off of Lydia, landing in the space between them, and they both curled into his sides as he slid his arms around them, pressing a kiss against Stiles' head, then one to Lydia's. "Have I mentioned before that I love you both? Because I totally do."

"We love you, too," Lydia replied. "Case in point, I agreed to this even though it means I'm going to have to shower, redo my hair and my makeup, and come up with a new outfit." She rolled away from Derek, searching out the clock and frowning slightly when she realized what time it was. "I need to get in the shower now, as a matter of fact."

"We could join you," Stiles offered, and Derek snorted even as Lydia rolled her eyes.

"The last thing I need is you two distracting me from getting ready," she sniffed, but she was smiling gently, and Derek thought to himself that it was a beautiful look for her. He was grateful he'd been allowed to get to know, to have, this side of her.

They watched as she got up and padded upstairs to the bathroom, Stiles still snuggling into Derek's side, fingers lazily circling his nipples. "I could go for round two," he said offhandedly, and Derek laughed.

"Lydia would kill us."

Stiles shrugged, his shoulder digging into Derek's ribs. "I can shower and get ready in five minutes flat. I could fuck you twice and still be ready before she's done with her hair."

"You want to fuck me, huh?" he asked in amusement, and Stiles colored slightly.

"I may have had a fantasy or two about it," he admitted, glancing up at Derek. "Would that bother you? I mean, are you too Alpha to submit to me?"

"The thing about alphas is, sometimes we like someone else taking charge for once," he remarked, looking down at Stiles as he registered the meaning of the words. A disbelieving grin spread across his face before it subtly changed into something seeking, challenging.

His hand slid down, fingertips trailing over Derek's abs until they reached his cock. It lay heavy between his legs, thick even in its flaccid state, but as Stiles' hand closed over it, it began to stir to life once more. "Lydia will forgive us," he murmured, eyes twinkling, and Derek exhaled on a soft laugh.

"Something tells me this is not the last time I will hear you say that," he mused, although his tone gave no doubt to the fact that he was happy at the thought.

Stiles threw one leg over Derek's thighs, his fist stroking lazily up and down Derek's growing erection. "Not even close," he agreed.

Derek closed his eyes, relaxing into the feel of Stiles' hand on him. "Stiles?"

"Yeah?"

"Thank you. Both of you."

He could feel Stiles' confusion and opened his eyes to see the quizzical look being directed his way. "Sure, of course. What for?"

Derek reached over, sliding his hand into Stiles' hair, gently guiding his head up so their mouths could meet. It was brief, gentle, but Derek poured his whole heart into it. "For being everything I never knew I needed."

A/N 2: If you like Sterek by themselves, FYI, there's more to come from me. I have about 80k of unposted stuff that's going to be posted within the next couple weeks, and I love pretty much every word of it. :)