A/N: I really should've mentioned this when I uploaded the first part, but hey, I'll say it now. this isn't going to be a full, blown-out fic, I intended it to be short, just three chapters (sorry!). It was just something I've been itching to try out, and because I needed to write some Destiel, even though I had no ideas for a full story. But good news, I've been struck with an idea last night which I think could be fun.

For now, just enjoy some badly-written smut!

Dean woke up in his boxers the next morning, lying on Cas' covers. The Omega, he was glad to see, was the same as he had left him; tucked in and sexed out. After quietly shifting off the bed in order to keep Castiel asleep, Dean pulled on his clothes and instantly checked his phone. It had been on silent, but there were twelve missed calls from Sam and about twenty texts. Shit.

With one last look at Cas, Dean slipped out of the bedroom in order to call Sam. He barely managed to scroll down his contact list when he found himself dragged away then shoved into the wall.

"What the fuck are you doing, Winchester?!" Michael barked, his grip literally choking the life out of Dean.

"Michael-" Dean tried.

"You know, when I told you Castiel was in heat, it wasn't an invitation to fuck him," Gabriel snarled and ignored Michael's wince at his words.

Struggling against the Alpha's claws, Dean rasped, "Let me fucking explain-"

"Oh, you better," Michael warned. "And it better be a damn good explanation, because at the moment, there's nothing stopping me from ripping your God damn throat out."

Michael's hold slackened about a millimetre. "Cas called me, he was confused out of his mind," Dean told him.

"And that was an excuse to come here?" Gabriel demanded.

"Hey, you're the one who left him alone, he was terrified!" Dean snapped.

"Don't you dare blame this on us!" Michael slammed him deeper into the wall. "I thought you were better than this, Winchester. I thought you were a better Alpha. But instead, you just knot any Omega who's defenseless enough, don't you?"

"I didn't knot him," Dean snarled.

Michael was visibly surprised by that. "What?"

"I didn't knot him. And I didn't do anything to him," the Winchester explained.

"Except fuck his brains out," Gabriel added.

"I was trying to help him," Dean grit out. "I didn't want to leave him in pain. I couldn't."

Michael glared at him, then suddenly released his throat. He turned to Gabriel. "Where is Lucifer?" he asked.

"Asleep, like the rest of the pack," Dean vaguely heard Gabriel say as he rubbed his sore neck. "That is, if the yelling didn't wake them."

Michael's eyes flashed back to Dean. "You. Out of my house."

Dean knew if he fought anymore he'd be in bigger trouble, so he headed for the door, aware that both brothers were following him. When he was halfway through the door, the smell of the air suddenly changed, and he stopped.

"Cas," Dean said. "He's up."

Michael and Gabriel perked their ears, and exchanged a quick glance. Then, the air sharply turned smotheringly sweet, followed by a long whimper echoing from down the hall.

"Crap, his heat's back-"

The instinct to rush to Cas was back, Dean's wolf demanded to get back to the Omega. He made a move to pass Michael, but was roughly pulled back.

"Where are you going?" he demanded.

"Don't you hear him? You just wanna leave him like that?" Dean retorted.

Before Michael could reply, Gabriel put his hand on his forearm. "Let him go," he said.

Both Dean and Michael's eyes snapped at him.

"Excuse me?" the dark haired Alpha asked.

"Mike, remember what the doc said when Cas decided on the suppressants? He said putting the heat off only makes it worse if he eventually stops using them," Gabriel explained. "Especially if he's not mated when he does stop."

"But he didn't stop," Michael insisted.

"Well, either he did, or the suppressants stopped working," Dean bit out. "Now are you gonna let me help him or not?"

Michael looked between Dean, Gabriel and the direction of Cas' room. At that moment, Dean had to empathize with the situation the other was in. If it had been Sam in heat, Dean wouldn't have been exactly jumping for joy either.

"I'm not gonna hurt him," he assured the other. "I just wanna help."

The Alpha's hard mask gave way as he sighed. Once he released Dean's shirt, the Winchester wasted no time in heading for Castiel's bedroom, taking out his phone as he walked.

Not dead. Will call later, he wrote to Sam before he switched off his cell.

Upon cracking the door open, a new wave of pheromones slapped Dean in the face, his wolf prompting him to get his clothes off the minute the door shut behind him. He was back on the bed in an instant, his mouth dry at the sight of the Omega, all ruffled from sleep and arousal.

Castiel crawled into Dean's lap, his knees anchored in the mattress, on either side of the Alpha's crossed legs. His fingers traced the scratchy stubble as he licked lightly at his lips and nose, bathing the Alpha, another way of scenting him. Dean, stubborn as he was, dipped his chin into Castiel's chest, inhaling deeply, taking in the Omega's pheromones.

"No, Cas. No scenting," Dean ordered softly.

Castiel whined throatily, but didn't disobey. Instead, he let Dean mouth at his chest, teeth barely scraping the skin, while he settled for playing with the Alpha's blond strands. He tugged them experimentally, and made Dean groan into Cas' skin and his fingers dig into his flesh. The Omega was pleased with the reaction; his scent shifted into something more teasing and smug. Dean scowled playfully, because Cas was just asking for trouble.

The Alpha caught him in an open kiss, his tongue darted into the warm mouth, melding around Cas'. He licked at his teeth, the roof of his mouth, sucked at his bottom lip until it an irritated red. Castiel submitted to him immediately; his lips worked Dean's mouth open, inviting him in, letting him taste. He ground down into the Winchester's lap, urgently pressing and rubbing their bodies together. It made Dean hiss sharply into Cas' mouth, made him pull him further into his chest until they were completely wrapped around each other.

The Omega's mouth slipped away from Dean's as he started mouthing slack kisses along his jaw, his nose scratching against the stubble. The Alpha arched his neck further to give Cas more access, and didn't think twice about whether it seemed like submission. The other obviously appreciated the trust, his pheromones starting up again. They almost drove Dean into a frenzy. His hands gripped the pale thighs possessively and he grinned wolfishly, his teeth bared in a show of dominance. Cas' wolf recognized the authority easily, nosing at the underside of the Alpha's chin, softened, submissive and complying.

Decisively, Castiel pulled away from Dean. Cradling his head in his hands, Cas rose onto his knees until his collarbone brushed the tip of the Alpha's nose. He snuffed at the other's hair insistently. Dean got the message and shifted slightly, before he eased Cas back down on him. A groan sounded low in his throat as the Omega all fully sat down, and it urged Castiel to lift up again. Dean could only hitch his hips up to meet Cas' falls, and trying to find the right place to work the Omega up proved more difficult to position. He brushed against the spot only a handful of times, but Cas rasped happily every time, nuzzling the Alpha with his nose and kneading his fingers into his shoulders. Dean didn't even have the will to tell him off.

The thought of knotting crossed his mind several times, almost convincing himself once or twice. Castiel evidently liked him enough to scent him. Maybe he would take him as his mate. But he reasoned that it still wasn't a spoken approval. It was very likely Cas was behaving the way he was because of his heat. Unlike female Omegas, the males used their heats to attract strong mates, capable of protecting them. Asking Cas now would be pointless; he'd say yes to anything, just because it was in his nature. Dean knew he was by no means a weak Alpha. He had a strong reputation in their community, and Cas' wolf must have known it too.

A whine came from the Omega, and suddenly Dean found Castiel's lips on his. "Your scent," Cas whispered. "It turned... somber."

Dean rubbed his head into the other's shoulder and willed his wolf to stop being such a damn pansy. "I'm fine, Cas." And to steer the conversation into a new direction (or better yet, put a lid on it altogether), he snapped his hips forward a little earlier than necessary.

Castiel gave a guttural moan. "Dean..."

The way he said his name made the Alpha grin and thrust up again. Cas' head dipped towards his chest, gasping mutely as Dean continuously snapped sharper. The Omega's muscles gave a sudden jerk, and he was over the edge, stuttering Dean's name in his ear. Dean kissed him chastely, and once Cas' form slumped in his arms, his heat subdued for the time being, the Alpha took the opportunity to slip out while he still could.

Following the same routine as yesterday, he cleaned Cas off, left him to rest and went to cool off. He really deserved a medal for his self-control.

Once he got dressed, Dean contemplated whether he should leave Cas' room at all. The fact that there was a whole pack of werewolves just behind the wooden door, each one probably pissed at him, didn't make him feel very easy. So he settled on calling Sam from the privacy of Castiel's bathroom.

After his phone chirped on, Dean could see that he had even more texts and calls from his brother. Not bothering to read any of the messages, he went straight for Sam's contact number. His brother picked up after the first ring.

"Dean, where the hell are you?!" Sam demanded.

"Relax, Sam. I'm at the Novak pack's," Dean answered.

"What, since last night?!" came the retort.

"Yeah."

"Care to explain why you disappeared without a word last night, Alpha?"

Dean instantly felt guilty at Sam's taunt. "I got a call from Cas last night. He, uh- he was in heat," he explained somewhat awkwardly.

"So what, you went over there-" Sam felt silent. "Oh God, Dean. You didn't."

Dean winced. "I did."

Sam exploded, "You knotted him without his consent?! Jesus, Dean, that's sick! I didn't think you'd do that-"

"Why does everyone think I knotted him?!" Dean hissed into the phone. "I didn't. Christ, Sam, nice to know you have such a high opinion of me," he spat.

"Oh." Dean just knew Sam was beetroot red now. "So you just- You know."

"Yeah," the other confirmed, still peeved.

Another silence.

"Any idea when you're coming home?"

Dean sighed. "None. Cas' heat- It's pretty bad.

"Okay, yeah, I get it." Then he asked hesitantly, "You need me to send anyone over? I'm guessing Michael's not too happy about this."

"He's pissed, but it's fine. I got it." He hoped.

"What do I tell the pack?"

"The truth. I'd be a shitty Alpha if I lied to them."

"All right. Call me if there's trouble, okay?"

Dean rolled his eyes. "I promise, Mom. I'll see ya."

"Bye."

As Sam hung up, Dean heard footsteps approach the bedroom door. Still under the influence of the ever-present pheromones, his protectiveness kicked in, and he left the bathroom to check on Cas.

The Omega was alone and still asleep, but Dean headed for to door just to be sure. When he opened it, he didn't find anyone outside, except for a tray of food sitting in front of his feet. He knelt down, resting on his toes, and picked up the note.

Make sure Castiel eats. You have some too, if you're hungry, asshole. -Gabriel

Getting Cas to eat turned out to be a challenge in itself. It was only a little while after noon when the Omega's heat lit up again. Cas woke with a start, his arousal working him up again. Instead of dealing with that, Dean wanted to get something into Castiel's stomach first.

But Castiel didn't want food. He wanted to have sex. Right then and there.

It started out good at first; Dean managed to convince Cas that for every bite he took, he'd get a kiss in return. So he fed him some of the buttered toast Gabriel left. Castiel ate solely for the purpose of getting to kiss Dean, which the Alpha would had found adorable, if he wasn't worrying about Cas' well being.

"No, Cas. Bigger bite. That doesn't count," Dean reprimanded when the Omega barely nibbled the toast.

Castiel scowled at him, but grudgingly broke off a bigger chunk. Dean waited for him to finish chewing, then pressed a kiss against Cas' lips, determined to ignore the sliver of tongue Castiel passed over his upper lip.

The method worked for a while. Castiel ate three quarters of his toast, until he said he'd rather just kiss Dean instead. The Alpha sighed, but stuffed the rest of the toast in his own mouth. He picked up the bottle of water and held it out towards the Omega.

"Here, drink some," he told him. "I gotta keep you hydrated, man."

Castiel gingerly took the bottle from him and took a minuscule sip.

"Cas, drink it," Dean told him seriously.

The Omega visibly shivered, and damn if it didn't turn Dean on. Cas took a longer chug from the bottle, then handed it back to the Winchester. Dean's head dipped back as he drank, and Castiel took the chance to straddle the other's lap. Careful not to disturb the hand holding the water bottle, he kissed along the outer shell of Dean's ear, nipping at the earlobe playfully.

When he drained the bottle, Dean capped it and tossed it to the side, perfectly aiming for the trash across the room. He wiped his mouth with the back of his hand, then met the Omega's gaze.

Castiel blinked up at him. "Can you take your clothes off now?"

Dean barely got out a, "Yup," before Castiel grabbed his shoulders and pushed him back into the mattress.

Rain splattered against the windows, tracing the glass with watery snakes. It glimmered like stars in what little moonlight the black clouds let through. The winds howled in the trees, bending them abnormally, ripping through the frail leaves. Thunder crackled in the distance, it's blinding light illuminated the silhouettes of surrounding evergreens.

In contrast, the bedroom was comfortingly warm and stuffy. The floor was covered in several articles of clothing; a pair of jeans lay at the foot of the bed, a shirt clung from the edge of the bed, boxers covered the bedside table's contents, and a sock was miraculously hung over a lampshade (the second had disappeared altogether). Hormones and two different scents lingered in the air, lulling the resident werewolves to sleep. But sleep wouldn't come for Dean.

He lay on his back, and stared at the ceiling, with the soothing sound of Cas' steady breaths in his ears. Warmth poured off the Omega in waves, but his heat was calm for now, and Dean couldn't smell any new pheromones wafting through his pores. His head was pressed into Dean's shoulder, with one hand thrown over his stomach. Dean couldn't bring himself to move it. Not only that, he liked the feeling, as if Cas was protective over him instead of vice versa.

The thought of Cas as his mate was permanently glued in Dean's mind. It was something he always considered deep down, but never somehow let it bubble to the surface. He didn't know why, though. Castiel was the only one (with the exception of Sammy) who knew how to calm Dean's short-fused temper. He knew what he liked, and what ticked him off. He could easily guess what was on Dean's mind from one look, and didn't have a problem with going toe-to-toe with him to stand for his opinion. Cas was... perfect.

He needed some air.

Gently tucking Castiel's hand into his chest, Dean crept out of bed, and picked up his boxers along the way. He didn't bother with anything other than his underwear and his shirt, which he was still tugging over his head as he reached for the doorknob.

The hall outside was dark, forcing Dean to keep a hand against the wall and blindly follow along. He found the kitchen on his left and decided on a glass of water. He didn't switch on the lights as he entered; they'd give more trouble than help. The door of the cupboard could barely be made out, and Dean felt around inside for a glass.

"Water's in the fridge, big guy."

Dean's hand zipped back like he'd been burnt. The floor lamp beside the dining table flickered on, effectively blinding the Alpha.

"Lucifer?" Dean hissed as he shielded his eyes. "What- what are you doing?"

"I should be asking you the same," the Beta returned.

Dean rolled his eyes and opened the fridge, wondering how he hadn't smelt Lucifer. Then again, he'd spent the last day and a half cooped up in Cas' scent, maybe it had messed with his senses. "Couldn't sleep," he finally answered.

"Cas talking in his sleep?" Lucifer asked.

Dean chuckled. "Nah."

Lucifer hummed thoughtfully. "He did when we were pups."

A sudden image of four werepups, bundled together in a heap (probably fighting over the covers, knowing Cas), popped into Dean's mind, and made him grin. He remembered that this was the Novaks' childhood home. The four of them grew up there, and then Michael, as the Alpha, inherited it when their father disappeared on them. It had happened when Cas was very young, and Dean knew he sometimes had trouble remembering what his father looked like.

"Sit down. I'm not gonna bite," Lucifer teased.

"I'll pass," Dean replied dryly.

The Beta held his hands up in surrender. "Come on, I'm not angry with you."

That caught Dean's attention. His eyes narrowed and he asked dubiously, "Seriously?" At the Beta's nod, he added, "Why not?"

"I just don't think you're to blame."

Dean quirked an eyebrow.

"I have a theory." Lucifer shrugged. "Still waiting to see how it all plays out, though."

"I'm guessing you're not willing to share with the class."

"Unfortunately, no. It's about Cas, and his private matters." Lucifer smirked mischievously. "Not that there's much room left for private, as you've now seen him naked on several occasions."

A small growl came from Dean, but he didn't push it. He spun the water in his glass absently, his mind stuck on Cas in bed, thanks to his big brother.

"Hey," he called, feeling a little awkward. "How long has Cas been in heat?"

Lucifer consulted the clock on the wall. "Well, seeing as it's one thirty, that was day three we wrapped up now."

"You have any idea how long he's usually in heat?"

"I can't remember. Kid's only had it once. He's been on suppressants since sixteen," Lucifer answered. "He should be okay by tomorrow, though."

Omega heats usually lasted around five or six days, but the effects already started wearing off by the fourth. Which was great for Cas, but Dean couldn't deny the way his stomach felt empty at the thought of leaving him.

He huffed through his nose. "I'm goin' back to bed," he announced. " 'Night."

"Sleep tight, Alpha Winchester," Lucifer called teasingly after him.

When he slipped under the covers beside Cas, Dean could feel him warming up again. By now, he was getting good at predicting when the next wave would hit. His guess was in about two or three hours. Well, Dean had never needed long to recharge anyway.

Castiel stirred in his sleep, already affected by the oncoming pheromones. Against his better judgment, Dean looped an arm around the Omega and brought his back into his chest, nosing softly at the nape of his neck. He felt Cas' warmth seep into his muscles, before he was coaxed to sleep by the intoxicating pheromones.

Two more waves came that morning. The first had been at just shy of three AM, close to what Dean had guessed, and the second, around nine. Castiel was more than happy to go back to sleep (but not before Dean got him to eat some breakfast) while Dean took a long shower. When he got out, he instinctively looked over to Cas, but was surprised to see a figure sitting at the foot of the bed.

Michael's head snapped to Dean's direction at the sound of the door clicking. The Alpha glared at him, like Castiel's heat was all his fault. He stood and walked to the door, then nodded for Dean to follow. Reluctantly, the latter finished drying off his hair and went after him. Michael was leaning against the wall across the door, arms crossed and eyes glowering. Dean stood his ground, raising his eyebrows as if to prompt him to talk.

"I appreciate the help you've given," Michael said, although he didn't actually sound appreciative. "But you're free to leave. Castiel's heat is manageable now."

Dean swallowed down the protest and nodded instead. Arguing with another Alpha, especially in his home field, was a bad idea to say the least.

He found Baby as he left her; at the side of the road in front of the house. The drive back was mundane, Dean didn't remember any of it. He was too busy fighting the urge to turn around and get back to Cas. But he was okay now, he reasoned. He'd be fine on his own.

But even after he repeated it a hundred times, he didn't feel any calmer.

The Impala pulled up smoothly into the familiar garage. Dean traced the hood with his hand, and after finding the garage door locked, he set out the long way around. He didn't even have to knock; the front door swung open before he reached the first step. Sam stood in the doorway, set on looking annoyed, but couldn't contain the grin at the sight of his brother.

"You took your sweet time-" Sam's smile melted away into a disgusted frown. "Dude! Did you even bother showering?"

Dean had the right to feel indignant. "That's your welcome?"

"You- My God, did you roll in the guy's clothes or something?" Sam asked as he let him through, hand covering his mouth and nose.

"No!" Dean exclaimed, ears prickling. "But I did spend a little over two days in a room with an Omega in heat, so excuse me for getting a little scented."

"Scented?" Sam barked a chuckle. "Forget scented, that's straight-up marked-" He cut off abruptly as his jaw dropped, and Dean growled low.

"Drop it, Sam!" he ordered.

His brother looked as if he wanted to say something, but Dean was glad when Sam kept his mouth closed.

"Hey, hey, what's with the yelling, man?" Ash's voice called from the kitchen while footsteps sounded from the stairs. He and Garth stepped out with two giant, matching sandwiches, and Charlie and Jo appeared on the stairs.

"You know, for someone who just got laid like, seven hundred times, you are extremely grumpy," Jo teased.

Dean's wolf snapped inside, and he snarled at her, teeth bared and eyes red. Silence filled the room. Charlie gripped Jo's arm and pulled her back, while Sam stepped in front of Dean.

"She didn't mean anything by it, Alpha," he said calmly.

Dean's eyes flashed to his Beta, before they melted into green again. His mouth slackened, but he still breathed through his nose angrily. "I'm gonna take a fucking shower," he muttered and pushed past Sam.

He didn't rinse off until he made sure he scrubbed every inch of his skin. Soap bubbled profusely, and he felt like he was in one of those commercials selling shampoo, which really pissed him off cause he hated those. After turning the water off, his back slid down the cool wall, his legs folded beneath him as he settled on the floor. Steam wafted everywhere, making the small space unbearably hot. It wasn't like Castiel's warmth, toasty and comforting, it suffocated him. Liquid condensed on his skin, and Dean wasn't sure whether it was water or sweat, neither did he care. He pressed his head against the cold tiles, closed his eyes for a while. He raised his wrist and sniffed it. scent could barely be made out. At least Sam would be happy.

Cas' taste was still on his lips however, something he half-hoped and half-dreaded was permanent. Dean wondered if Michael was ever going to let him see the Omega again. He doubted it. Which was probably for the best. Cas would be mated. After all, he did get off his heat-suppressants. And it would be easier for Dean if he didn't have to see any of that.

But then why did Michael insist his brother hadn't stopped using the suppressants? As Cas' Alpha, Michael had to know if his Omega thought of someone as a possible mate. Dean just couldn't get his mind off it.

Finally, he got out, dressed in a white tee, boxers and sweatpants. He didn't bother with much else. The clothes that had spent two nights and two days in Cas' room lay neglected on the floor. Dean picked them up, and realized what Sam had been talking about. Now that he was back home, his nose was getting used to the old smells, ones that didn't include an overdose of pheromones. He could tell now that his clothes were absolutely drenched in Cas' scent, both from being touched by the Omega and from simply soaking in the sweet air. Dean didn't know what to do with them. The smell was clearly beyond being washed out, and he couldn't put the clothes back in his closet. The rest of his stuff could catch the scent. But on the other hand, Dean didn't want to throw them out. Not only had it been one of his favourite shirts (why'd he have to wear Zeppelin that night?), but now it gave off the one smell that drove Dean up the walls; Cas. So he settled on throwing out most of the clothes (the jeans were tattered and ripped up as it was, he had enough boxers, and he'd lost that second sock anyway), but the Zeppelin shirt was tucked away into one one his drawers.

The Winchester dropped onto his bed, with only his own scent to fill his nostrils. What he really needed now was a nap.