Disclaimer: I only own the plot and my OCs. Anything you recognize as not mine belongs to Marvel Studios, Disney, Warner Bros. Entertainment, and/or their otherwise respective owners.

Author's Notes: Hey, everyone! This one was a bit shorter than I thought it would be and I think the next one might be, too. I don't know, haven't written it yet. I'm gonna try to get it out soon, though, so I can get to the extra-extra fun stuff sooner. ;)

Fair warning: this is like, the third time I've written smut lmao. But, that being said, I'm actually really proud of how this turned out. Maybe y'all won't like it, idk. We'll see.

Title credit comes from the song Hooked On You (feat. Timothy Auld) by Parov Stelar, btw. Electro swing is what's fueling my muse for this series.

Anyways, hope you enjoy!

~TGWSI/Selene Borealis

~the black and gold 'verse~

~hooked on you~

Tony felt it coming a few days ahead.

He woke up that morning feeling hot and feverish, with a damp sensation in between his legs and a mild cramping in his lower back and thighs. Knowing them instantly for what they were like remembering an old, forgotten dream, he let out a groan as he turned onto his stomach and burrowed his head into his pillow.

The presence of his husband's fingers was in his hair. While alphas usually ran hotter than omegas, with his flush they were about the same temperature. He moaned again at the thought.

"Tony, what's wrong?"

"I'm in pre-heat," he said, his words muffled from his face being smushed.

Bruce's fingers tensed.

If they were any other married alpha and omega couple, one without children, they would have been prepared for this. They would've shared thirteen – fourteen, if you included the one before they'd gotten married – heats now, having long-since followed into a familiar rhythm which worked. They would have had a routine, a guide.

And even if they hadn't, they would have had time to talk about it, if nothing else.

But alas, they weren't normal, far from it.

The sound of their three-year-old daughter's footsteps in the hallway made Tony's head jerk up, his neck craning. With a giggle, she bursted through their partially-open door, her grey eyes alight with joy. "Daddy, Omi!" she called, jumping up on their bed with a bit of effort.

Bruce caught her before she could get very far, pulling her into his lap and kissing her hair. Tony was grateful for this; despite having just woken up, he didn't have the energy to deal with a rambunctious toddler.

"Good morning, princess," his alpha spoke, murmuring. "How are you this morning?"

"Good," Lili laughed, drawing out the word by several syllables.

"Where are your brothers?"

"Harley sleeping." She scrunched up her face. "Dick...in kitchen."

"Is he helping Alfred make breakfast?"

She nodded.

Thank God for Alfred, Tony thought idly. Every time they went back up to Cambridge for the school year, he missed Alfred's help for the first month, then forgot what it was like. When they got back, the beta's work was like a miracle, and he was more than thankful for it.

"Come!" Lili shouted, grabbing her father's hand. "Come to kitchen, Daddy!"

He grimaced.

Well, so much for that.

Indeed, it wasn't until that night he and Bruce were able to broach the subject of his heat again. The breakfast table wasn't really a place for such conversation, and called into his company for once for some important decision or another, his alpha was gone for most of the day. That left him and Alfred only to take care of the kids, which was basically a full-time job.

...Still, he thought, out of the corner of his eye he saw Alfred giving him a strange look once or twice, undoubtedly catching the change in his scent. So did Dick.

He ignored them, choosing to down two ibuprofen more than necessary instead.

Like he remembered, all the pills did was lessen his cramps, nothing else.

Fuck.

"Tony," Bruce intoned at half-past nine, after they'd put the kids to bed. He was laying on their mattress; Tony was trying not to pace the length of their room, but failing miserably. His hands were fidgeting, longing to come up and rub at his arms, but he wouldn't let them. "Amore mio, can we talk about this?"

The nickname had him stopping in his tracks.

He feigned stupidity innocence. "Talk about what?"

Bruce leveled him with a look. He stood up and walked over to him, closing in on him with only a few steps. Reaching out, he grabbed his wrists and caressed the insides of them with his thumbs. "Your heat," he stated simply.

If you were to ask him then, he would've blamed the tears which blurred his vision on his hormones, nothing else.

"It's early," he whispered.

That had been one of the defining features of his heats, ever since he'd presented. They were always early, and always long. What was for most omegas four days was seven for him, and he doubted that would have changed in the past three and a half years.

Because instead of the usual eighteen months it took for an omega to have a heat again after giving birth, his was going to come at not even seventeen.

"I know," Bruce replied. He paused. "We need a plan."

Tony diverted his gaze.

Letting go of one of his wrists, the older man grabbed his chin gently, tilting his head up so he was forced to look at him again. "I promised I would take care of you, Omega, in sickness and in health, but I need to have an idea of what that is. What do you want me to do? Do you want me to treat this like your heat while on the suppressants, or...?" He trailed off.

Purposefully, Tony might add.

The omega chewed the inside of his cheek. He knew what he'd said before about not wanting to have sex during his heat, and he was sure it had been true at the time. But...that had been before. He was married now, had been having sex with Bruce like they were a pair of rabbits for what would be four years in May. Their two biological children were proof of that.

Besides, he could vividly remember what his mother had told him not long after his wedding, before he'd found out he'd been pregnant with Lili. "Sex can help with your time of season, bambino," she'd said, ignoring how he'd spluttered in response. "It makes the uterus contràe, the mind focus. Even if you're on birth control, there's no shame in doing it during your heat."

"I think," he began haltingly. "I think it would be okay for us to have sex...during my lucidity. But only with my explicit say so."

"Okay," Bruce said.

"And if I say no..."

His alpha's expression softened. "Of course." He leaned down to kiss him, their breaths ghosting along the other's lips. "I won't hurt you, Tony. I promise."

It took two days for him to ask Bruce to have sex with him.

Once his heat started, he all but locked himself in their room. Their kids were instructed to not disturb him if at all possible, almost one-and-a-half-year-old Harley included. Tony hated it, hated every second of it, wanting nothing more than to be with his family.

But, as his body twisted and turned in on itself, he knew he didn't have a choice. It simply wasn't a good idea.

He had forgotten how bad his heats could be. Slick pooled in between his legs, ruining the sheets of the bed, but there was no point in changing them as long as he was in estrus. His dick was painfully hard. No matter how much ibuprofen he took, his lower back, sides, and thighs all felt like daggers were being dug into them. And his mind was foggy, if not downright obscured during the moments his heat peaked.

"Come on, amore mio," Bruce told him. There was a glass of water in his hands, which he was trying to get him to drink. "Take a sip, please."

Reluctantly, he did as he was told.

The other man had been practically a saint throughout all of this. Like with before, he'd taken care of him, feeding him and cleaning him and making him use the bathroom. This time, there was no shame involved. They'd long become accustomed to each other's bodies, the subtle and glaring differences between them.

Thinking about everything his alpha had done for him made something twinge inside him. He was lucid enough to recognize it for what it was, and what he wanted.

As Bruce put the glass of water on the nightstand, he grabbed his arm. Looking up at him with eyes wide open, he begged, "Please."

Bruce gazed back down at him uncertainly. "...Tony?"

He bucked his hips. "Please, Alpha!"

Comprehension dawned on the man's expression. He leaned in closer to him, the apprehension of his touch tingling on his skin like static electricity. "Tell me what you want, Tony. Use your words."

Any other time, his ask would have been romantic. Currently, however, it was downright torturous as he tried to get his cotton-tasting tongue to work. "F – fuck me," he sobbed. "P – please, Alpha, make – !"

The end of his sentence was cut off by Bruce's lips meeting his. Their kiss was searing; it was all he could focus on, only vaguely noticing how his mate's fingers snuck underneath the hem of his shirt. Breaking off their kiss, he ordered, "Up."

It took practically all of Tony's willpower to comply.

Once his shirt was gone, Bruce's mouth trailed downwards. He took the skin on the column of his throat into his mouth, gently sucking and biting it. Each of the three love bites he made were totally going to bruise later, but Tony couldn't find it in himself to care much.

His trail reaching the omega's chest, Bruce mouthed his right breast. Tony moaned and moved his hands to pull down his husband's pants. But Bruce batted his hands away, a growl rising up from his chest as he did the vice versa instead. When he was done, he let go of his right breast to do the same to his left, and then –

Oh.

Oh.

Oh.

Tears sprang to his eyes. One of Bruce's hands was wrapped around his dick, the warmth absolutely encapsulating him. The other's index finger was at his hole, edging around the rim. Without any difficulties due to the slick gushing out, he pushed it in past the ring of muscle, then pulled it out. He dragged it slowly, tortuously, along his perineum to the base of his dick, igniting all the nerves there. Dragging it back down, he repeated the process.

Tony felt like he couldn't breathe. "I – Istenem!"

Chuckling, Bruce moved away from his breast. Leaning upwards, he captured his mouth in another kiss. At the same time, his finger entered him all the way to the third knuckle in one quick, swift movement. It was soon followed by another, his middle finger, and then the two were scissoring as he prepared him.

"I love you," Bruce whispered after they'd parted in one way, still being connected through the other. "The omither of my children, my husband, my mate, my Omega."

Gasping, Tony came. It was embarrassingly early for him to be having an orgasm, Bruce hadn't even gotten inside of him yet, but the other man had always known how to get him off quickly.

Plus, in the aftermath of his release, he felt his cramps and the fog of his mind abate some. It wasn't much, but it was some.

Bruce, having paused in his ministrations, nuzzled his shoulder. "Tony?"

Feeling his own purring, he wrapped his arms around his alpha's neck. "Give me your knot."

Laughing, Bruce did just that. Once he'd finished preparing him, his fingers left, replaced by his cock. The feeling of them becoming one was magnetic; Tony whined and bared his throat, his legs crisscrossing over the older man's back.

With each thrust, Bruce said something. He was like that: though sparse and choosing with words in public, when it was only the two of them, he spoke heavy, hot, fast.

Tony loved it.

"You're beautiful," he grunted, slamming into him. He pulled back. "So beautiful." Another thrust. "And you're all mine."

Vaguely, Tony thought he sounded like he didn't quite believe it.

His hands reached up, running through his husband's hair. "All yours," he agreed.

The pace picked up. "Amore mio, mon âme," Bruce breathed. "You're incredible. I love you, I love you, I love you..."

He felt the stutter in the man's hips first, followed by his knot beginning to inflate. "That's it," he said. "Come for me, Alpha."

But Bruce wasn't going to without him doing so first. Searching, he found Tony's mating gland at the side of his neck. He bit down on it, barely enough to draw blood. Yet. His body clenching, the younger man shook with the weight of his second orgasm. Instinctively feeling the alpha's knot popping, he bucked his hips, too, milking it for all he possibly could.

Neither of them said anything immediately afterwards. Bruce turned them around so he was laying on the bed and Tony on top of him, making for a much more comfortable refractory period. They drew meaningless figures into each other's skin, merely content to bask in their combined presence.

Finally, however, as he felt Bruce's knot slowly begin to deflate, Tony spoke. "Wow."

His mate chuckled. "'Wow?'"

"I think those were the best two orgasms I've ever had," he elaborated. "Not that it's any slight against you, but – "

"You're in heat, Tony," he was reminded. "For the first time since we've been married, too. I wouldn't expect anything less."

"Yeah." He paused, looking up at Bruce through his eyelashes. "Wanna go again?"

The grin he received was downright wicked. "Believe me, I wouldn't like anything more."

After the second time, they didn't have sex for the rest of that day. Bruce had to go check on their children, and despite the extra time their deeds gave him, Tony's lucidity still left him. The next time it rose up, it was in the early hours of the next morning, before sunrise. Bruce was holding him in his sleep, his expression content and peaceful.

Tony almost felt bad for how he was about to ruin it.

Almost.

But since his husband spent half of his nights masquerading as a vigilante, he couldn't really.

Shifting in his hold, Tony wriggled his ass against his dick. Bruce mumbled something in his sleep, frowning slightly, but didn't stir.

A huff escaping from his lips, he decided to take it a step further. Hooking a thumb down the hem of his shorts, he pulled them off. He did the same with Bruce's, too. Then, breaking out of the hold entirely, he sat up, his legs coming to rest on either side of the alpha beneath him, and impaled himself on the dick which was slowly becoming hard, as if the older man's body already knew what was about to happen.

Then again, with the way their pheromones were scenting the room, it probably did.

Without proper preparation, the friction burned, no matter how much slick he was producing. He let out a whimper, unable to stop himself.

This, it seemed, was what was able to make Bruce wake up. His eyes blearily cracking open, he regarded him with a tired wonder. "Tony?"

His tone was not reproachful, yet strangely Tony found himself blushing. He almost felt like a little kid, having their hand caught in the cookie jar. "I'm sorry," he mumbled. He didn't stop rocking, trying to find a pace which would fit. "I just – I need – "

"No, it's okay," soothed Bruce. "I'm not mad."

Flipping them over, he continued where his mate had to leave off. "It's okay," he repeated softly. "Tell me what you need, Omega."

Tony's back arched. There was a reason why he'd started off riding Bruce. After their previous two sessions of lovemaking, laying on his back didn't seem quite – right. It was like a part of him wanted something more – more –

Primal.

"Pull out," panted Tony. "I – we need to switch positions."

Thankfully, Bruce complied. He sat back, watching with a burning hunger as Tony turned over onto his stomach. He perched himself on his hands and knees and swiveled his head around, glaring. "Do it."

His alpha didn't need to be told twice. Readjusting his position, he grabbed his sides and pulled back until they were connected again. Tony groaned at the contact, feeling his arms grow weak. But he wasn't willing to put his head and arms down onto his pillow, not yet.

Release wasn't so easy for him this time. It was like his body had realized what he was trying to do now, and was doing its best to prevent the inevitable. Moreover, with him unable to touch himself due to keeping himself upright and Bruce seemingly uninterested in jerking him off, he wasn't being stimulated past the threshold.

Choking back a sob, he demanded, "Harder."

Bruce's hands, having previously traveled along the notches of his spine like phantoms, slid down his sides. They pressed in on his flesh hard enough to leave parallel bruises which would appear later in the morning. One of them reached down to cup his ass and squeezed experimentally. The pleasure which ricocheted through his nervous in reaction was no small thing; Tony moaned, then tried to stifle it just like he had his whimper.

He both felt and heard Bruce rumble. "No," he said. It wasn't a command, but it wasn't a request either. There was no room left for argument. "Don't quiet yourself. I want to hear you, Omega."

The hand on his ass fell away. He whined at the lack of touch, but then it was on him again, and it was there. On his dick. He gasped as he felt the twist of a hand, so similar to the way Bruce's hand had wrapped around it yesterday yet so different at the same time. That touch had been simple, all-encompassing; this one was teasing, more complex.

It was everything he needed.

"Are you enjoying this?" growled Bruce, an added dose of pleasure and primitiveness. "Is this what you wanted, Omega?"

"Y – yes!" cried Tony.

"Is this what you needed?"

For the third time, the hand on his dick moved away. Before he could protest, it fisted into his hair. His head was pulled back. Fireworks danced in his vision.

"A – Alpha," he wept. "Alpha, please – "

His lack of an answer – or rather, the signal for things to return to what they had been – made Bruce let go of his head and grab his dick a second time. His head fell forwards, and then indeed the rest of him as his arms gave out from underneath his weight. Sue him: he wasn't a vigilante like his husband, nor was he used to the burn of straining muscles.

"Is this what you needed?"

"Yes, Alpha! Please, please, please..."

His mate, never one to deny him anything, came. The way his seed painted Tony's insides and his knot snagged on his hole had him orgasming as well. His vision flashing white, he cried out, only vaguely aware of how Bruce repositioned them as his body became entirely boneless.

Bruce waited until they were unlocked to reach over to the nightstand. He grabbed Tony's glasses and handed them to him, then a cup of applesauce and plastic spoon. The scene was terrifyingly familiar.

Tony cringed. "Really?"

"You need to eat," Bruce said. Opening up the cup, he dipped the spoon into it and pressed it against Tony's lips. "Open up, Omega."

Afterwards, Tony wiped his mouth with a tissue before snuggling into the other man's side. "Thanks," he mumbled, referring to both a plethora of things and only one in unison. "I love you, Alpha."

"I love you too, Tony."

At about two o'clock in the afternoon on the sixth day, his heat ended.

"You know, it's kind of weird," remarked Tony with a shrug of his shoulders. "I'm used to my heats lasting for a week. Guess what we did must've done something."

Dick made a face from where he was sitting at the breakfast table, eating a bowl of yogurt. "Don't talk about that while I'm eating."

The kid was ten years old now, a preteen. Tony felt like he could scarcely believe where the time had gone.

As he shared a look with Bruce, the man smirking slightly over Dick's head, he also couldn't believe how easy it was to rile him up.

"I could say the word."

Dick's face flushed. "Please, don't."

"Would you rather I spell it?"

"No!"

"S-E – "

"Stop!"

Nearly seventeen-month-old Harley, who was sitting in his highchair, started to laugh. Snickering, Tony walked over to him and picked him up, smacking kisses to the toddler's cheeks. "Do you find your brother funny?" he asked. "Huh, do you? That's okay, I find him funny, too. He's going to be such a fun teenager."

"You were a teenager up until last year," Dick muttered, scowling.

"But I'm not anymore," Tony singsonged with a grin.

Later, two months later to be exact, as he was leaning over a toilet for the third morning in a row, it occurred to him that, while he might have been right about the sex ending his heat early, it might not have been entirely the correct answer. Driving himself to the pharmacy, he bought himself a couple of tests.

They were in his hands, capped, two hours later as he sat down on top of Bruce's lap while the man was reading one of his favorite plays, The Tempest. "Alpha?"

"Yes, Tony?"

"I'm starting to think I'm not the only one with a greater than average fertility." At the way Bruce looked up at him, eyebrows furrowed, only for his eyes to widen as he saw the two positive tests, he nodded. "Yep, despite using birth control, somehow I'm pregnant again."

Word Count: 3,586