A/N: This chapter is pretty much just smut, so if that's not your thing, you may want to skip it.
Hotch woke warm and confused with hot lips pressed insistently against his own. There were fingers tangled in his hair, tugging lightly and sending little shocks of pleasure down his spine, and hips gently rocking against his own in slow undulations that had him gasping for breath. Reid's tongue flicked out teasingly, barely dipping past his lips, and Hotch's tongue followed it, delving into Reid's mouth. The Omega keened softly, his hips moving more urgently as Hotch's hands settled on the younger man's waist and squeezed. Hotch was momentarily thrown as he realized his hands were on smooth, heated skin, and he groaned as he opened his eyes to confirm that Reid was naked. He kissed the other man in earnest then, drawing delicious sounds from Reid's throat as the air grew thick with the warm smell of vanilla and the slightest hint of coffee beans, making him dizzy.
One of Hotch's hands smoothed over Reid's ass, fingers slipping between his cheeks and finding the slick hole with ease. The Omega jerked up, his head falling back on a sharp gasp and his hips circling in a dazed search for pleasure. "Hotch, please," Reid whined as Hotch's fingers teased his entrance before two fingers pressed inside slowly but easily. Hotch hummed softly, his free hand slipping from Reid's waist and gently palming Reid's weeping cock as he started thrusting his fingers of his other hand into tight, wet heat. The younger man trembled and tried to rock into both stimuli at once, his breath leaving him on harsh pants.
Reid had always been rather pretty; Hotch was willing to admit that much. But as the Omega writhed above him with his spit-slick, kiss-swollen lips parted around moans and whimpers, Hotch's mind supplied the words "beautiful" and "radiant" instead. On some level, he knew part of it was the Alpha in him responding to the pheromones of an in-heat Omega, but that didn't make his thoughts any less honest.
"God, if you could see yourself right now..." Hotch groaned, his voice deeper than normal even to his own ears. He thumbed the slit of Reid's cock, spreading the beads of precome over the head before starting to stroke him in a loose grip. The younger man made a pitiful noise as he alternated between fucking back against Hotch's fingers and fucking into Hotch's fist. Hotch had to grit his teeth in order to keep from bucking his hips up into Reid's, his erection throbbing almost painfully at the sight of the Omega taking his pleasure wantonly.
"Please," Reid gasped, sweat-slick hair falling into one of his eyes as he looked down at Hotch. His pupils were blown wide, almost obliterating the hazel irises, and Hotch gripped Reid's cock more firmly, daring to stroke faster now that his hand was wet with precome. He also pressed a third finger into the Omega, both his hands adopting a rhythm with an ease Hotch had never expected. It wasn't long before he felt Reid's walls clamp around his fingers, and then the younger man's body jerked, mouth falling open in a silent cry of release as he came over Hotch's hand, some landing on himself as most streaked over Hotch's undershirt.
As Reid collapsed against his chest, Hotch reached his come-streaked hand out to grab a washcloth and gently wiped Reid clean before wiping his own hand off. He then pulled his fingers out of the Omega, causing Reid to tremble with aftershocks. Tentatively, Hotch brought his hand to his face and flicked his tongue out to taste Reid's slick. A soft rumble almost like a purr vibrated in his chest as the warm flavor burst across his tongue like ambrosia, and he couldn't help but continue licking the sweet substance that covered his hand. He stopped when he felt Reid's breathing pick up, and he felt the harsh puffs of Reid's exhales against his jaw.
The younger man was watching him avidly, and Hotch hummed—pleased—as Reid's tongue darted out to wet his lips. Hotch ducked down to take Reid's mouth in a hot kiss, allowing Reid to taste himself. The Omega responded eagerly but lazily, his lips moving slowly against Hotch's. The Alpha growled quietly, thrusting his tongue deeply into Reid's mouth and groaning when Reid gently sucked on it. And then, far too soon, Reid was pulling away for breath.
"Give me a couple minutes, and another wave will hit," Reid panted softly, mouthing at Hotch's jaw. "How aware are you right now?"
It took Hotch a long moment, far much longer than he'd like, to reply, "Enough. I understand what you're saying. Gathering my thoughts to answer like I normally would is difficult."
"Hmm, I mainly just need you to listen," Reid murmured, sounding remotely distracted as he pressed his face against Hotch's neck, his nose nuzzling the skin. "I'm sorry about the sudden wake-up call. I tried to wait, but it became increasingly more impossible to ignore the warm Alpha next to me as I played with myself." Hotch growled low at the images that conjured, his hands moving to brush up and down Reid's sides. Reid stretched, almost purring at the soft strokes as he smiled wickedly at Hotch. "I know we dressed down for convenience and modesty, but now you're wearing far too many clothes." Moving so his mouth was at Hotch's ear, he ordered softly, "I want them off, Alpha," as his hands tugged at Hotch's undershirt and boxers.
The effect those words in that tone had was immediate: Hotch sat up, forcing Reid to do the same as he reached behind his head and tugged the shirt off, tossing the article of clothing to the side somewhere. Reid's dark eyes roved over the exposed skin, and Hotch's chest vibrated on a pleased rumble as the Omega leaned forward and rubbed his cheek against Hotch's now bare shoulder while his smooth hands ghosted over Hotch's chest. The Alpha growled in warning when Reid's fingers brushed over his nipple, and Reid pressed an open-mouthed kiss to his shoulder in apology, blunt nails gently raking over his abdomen instead.
"Lie back," Reid commanded, teasing Hotch's collarbone with his teeth. Hotch looked confused but did as he was bade, muscles rippling beneath his skin as he laid down again. Reid flashed his teeth in a grin before hooking his fingers around the waistband of Hotch's boxer briefs. "Lift your hips," he ordered, and Hotch obeyed, shifting his hips up to allow the younger man to slip the last piece of clothing from his body. Reid's gaze shifted to Hotch's leaking cock, and Hotch watched as his Adam's apple bobbed around a swallow.
Reid's lips parted, his eyes darting up to Hotch's face, and Hotch's breath stilled in his chest as the Omega held his gaze while leaning down. His breath left him on a hiss when Reid's tongue curled around the head of his cock, and then Reid's lips closed around him, and his hands quickly tangled in Reid's hair. Reid's hazel eyes glowed up at him just before a soft suckle had him bucking slightly into Reid's hot mouth. "Fuck," he hissed as Reid accommodated him, and experimentally he rolled his hips forward again, growling as Reid allowed it and simply stroked the underside of Hotch's cock with his tongue. Eyes narrowing, Hotch started a slow, short thrust of his hips, his breath quickening as Reid took it. It encouraged him to thrust deeper, the head of his cock pressing into Reid's throat. The Omega moaned around him, sending sparks of pleasure through his cock and spurring him to thrust faster until he'd settled into a rhythm that had him seeing stars. Haley hadn't even liked giving blowjobs, so he had never fucked someone's mouth, even though he'd heard from others that it was a heady experience. The descriptions did not do the actual thing justice.
Hotch could feel himself getting close, and apparently Reid sensed as much because he attempted to pull away. The Alpha growled low in warning, his hands pressing down on Reid's head, and the younger man glared up at him right before he felt a sharp pain to his knot. Yelping quietly, Hotch dropped his hands, allowing Reid to lift his head with a soft popping sound. Reid bared his teeth angrily, snapping hoarsely, "I didn't think we had to address it, but since you were apparently willing to try, you are not knotting my mouth, Aaron Hotchner. Is that clear?"
Hotch's head was a little clearer because of the pain, and he managed to nod and wince. "I'm sorry, Reid," he murmured, feeling rightly chastised.
Reid sighed and moved to straddle Hotch's waist, bending down to press a gentle kiss to his lips. "It's all right. I know it's hard for you to maintain control, but if I'm fighting against you, try not to think it's because I'm not submitting. Most likely something's wrong."
Hotch nodded, brushing kisses down Reid's neck and nipping at his collarbone. Reid moaned softly, grinding back against Hotch's cock, and Hotch hissed, licking and biting his way down to a nipple before sucking and teasing it into a hardened nub. The Omega keened, rocking his hips in short, aborted movements. Hotch propped his hands on Reid's waist, switching his attentions to Reid's other nipple and sucking it between his teeth. Reid braced his hands on Hotch's chest, his back arching as his breaths came in gasps. Hotch was remotely surprised when Reid shifted so Hotch's cock slid between the cheeks of his ass, rubbing against his slick entrance. Reid," Hotch hissed, his fingers gripping tighter around Reid's hips as his head fell back against a pillow.
Reid moved so the head of Hotch's cock was at his entrance, and both men groaned as Reid's hole was breached. Hotch trembled at the exquisite feeling and had to growl, "Wait," before Reid could even take more than an inch. The Omega stopped, shaking with restraint, and gave him a calculating look.
"Oh," Reid breathed, tilting his head. "Grip yourself at the base. Once you're inside me, we can wait, but I can't stay like this."
Hotch gritted his teeth and did as Reid suggested, giving a tight nod for him to continue. Reid's breath left him on a long exhale as he seated himself on Hotch's cock, taking in the last inches as Hotch's hand returned to his hip. It had been far too long since Hotch had engaged in any sort of sexual activities that didn't involve just his hand, so the feel of Reid hot and wet and so fucking tight around him knocked him breathless.
He couldn't have been more thankful for Reid's patience as he did his best to quell the heat and arousal spreading through his body. After a few breathless moments, he tentatively rolled his hips, causing Reid to make a strangled sound. "Hotch," the Omega gasped, his fingers pressing hard into Hotch's chest.
Hotch's chest rumbled in a purr as he slid his hands down Reid's thighs, pleased by the younger man's willingness to do as he'd asked. "Good Omega," he whispered, enjoying the way Reid's hole fluttered around him as Reid trembled from the praise. Unable to help himself, Hotch thrust up gently, drawing a broken cry from Reid's lips. "You can move," he urged quietly, and Reid nodded, pushing himself up on shaky limbs before sliding back down. Hotch's grip on Reid's hips helped them set a steady pace, and it wasn't long before Reid was riding him fast and hard; Hotch could barely breathe as the younger man moved above him.
And then Reid tossed his head back on a particularly deep thrust, baring the wide expanse of unmarked skin on his throat, and Hotch growled loudly, causing the Omega to stop and stare down at him nervously with wide eyes. "Hotch, what's wr—" The Alpha pulled Reid down and close before he rolled them, and Reid's words cut off with a slight grunt of discomfort that morphed into a high-pitched wail of pleasure-pain as Hotch's teeth sank into the dip between his neck and shoulder. "Fuck, Hotch," he whispered with a harsh breath, and Hotch growled satisfiedly as Reid's legs wrapped around his waist before he started thrusting hard and deep into the younger man.
Reid whimpered underneath him, his hips moving to meet every thrust of Hotch's. His head rolled back and forth slightly against the pillow—or at least as much as it could with Hotch holding his upper body down with his teeth and marking him. Hotch nearly purred at the image of the Omega bearing his mark, a sign to others to back off.
"Please," Reid's choked plea caught Hotch's attention, and Reid's hands were frantic as they tried to catch on warm, sweaty skin. "So close, Hotch, touch me, please," Reid whined, his breath catching in his throat every other thrust. Hotch growled but otherwise listened to the plea, his hand stroking over Reid's abdomen before curling around Reid's neglected cock at the same moment that he started grinding his knot against Reid's entrance. His Omega went still underneath him, breath escaping his chest in a rush before he keened loudly as Hotch slowly worked his knot inside him. Reid started whispering his name over and over again, and Hotch rocked gently into him as he timed his short thrusts with the strokes of his hand.
Reid came with a broken cry of Hotch's name, and the feel of Reid's walls clamping around his knot was enough to send the Alpha over the edge with a hoarse shout, filling his Omega with thick spurts of his seed.
Hotch lifted his head to gently lap his tongue over the bright red mark he'd left. The stimulation caused Reid to shiver, and his walls squeezed around Hotch's knot again, making Hotch groan as the action pulled another orgasm out of him.
A few minutes later, Reid's hands were gently stroking Hotch's hair, prompting the older man to sigh softly and mumble against Reid's shoulder, "I'm sorry if I hurt you."
Reid chuckled quietly, tugging at Hotch's short locks until Hotch looked up at him. "In this situation, it'll be nearly impossible for you to be gentle with me, Hotch. If you had actually hurt me, I would have reacted much the same way as I did when you wanted to knot my mouth."
Hotch winced, his mouth quirking into a grim smile. "I wasn't exactly thinking that far ahead. All I knew was I liked having your mouth around me, and you were planning to stop."
"Aren't you glad I did, though?" Reid queried, his hazel eyes glowing brightly as he purposely shifted his hips, his hole fluttering around Hotch's knot and making Hotch's body jolt in pleasure.
Hotch hissed before narrowing his eyes at Reid, gently biting at his jaw in reprimand. "You have to stop doing that if I'm going to knot you when your heat gets well under way."
Reid actually laughed, and it sent unbidden warmth through Hotch's chest. "Hotch, I know it's been at least five years since you last helped an Omega through heat, but even you should know that the pheromones given off by an Omega while in heat almost guarantees the Alpha will be ready to knot the Omega several times in a short period. I'd estimate you have at least fourteen more years before you need to worry about not being able to have multiple orgasms during a heat." Leaning up to press a kiss to Hotch's nose, Reid tilted his head and asked, "Do you think we could sit up? We should probably eat something and drink a bottle of water." With a tentative wriggle, he added, "And wet a washcloth to clean us a little since we didn't have a chance after the last round."
Hotch hummed softly in agreement, and though it took a few tries, they managed to maneuver themselves into a sitting position with Reid straddling Hotch's lap since his knot was still too swollen for them to separate. Reid didn't seem to mind, however, and with a little difficulty, Reid managed to grab two bottles of water, a washcloth, and a pack of crackers. He opened one bottle and poured some water onto the cloth first before taking Hotch's hand in his and wiping the mostly-dried come off of it before he wiped down his chest, his nose wrinkling cutely at the stickiness.
The Alpha couldn't help himself as he curled a hand around the nape of Reid's neck and pulled him in for a warm, breathtaking kiss that he only pulled away from once his Omega was a whimpering mess. Reid's eyes were wide as he stared at Hotch, almost confusedly. Hotch simply smiled before uncapping the other bottle of water and taking a long drink. It wasn't until they had finished off the water and crackers and Hotch's knot (though smaller than before) still hadn't gone down, that Hotch murmured, "I wasn't cognizant enough earlier to ask, but there was something I found a little odd."
Reid's brows furrowed, and he cocked his head to the side as he prompted, "And what's that?"
"Your heat scent is very warm; it's mostly vanilla with a hint of coffee beans. Your everyday scent, however, is... clean. It may have a touch of a floral fragrance to it with musky undertones, but otherwise your scent is as undistinctive as it is distinctive. I wasn't expecting you to smell so differently during heat. Haley always smelled of pears, no matter what. It was stronger during her heat, but otherwise..." Hotch trailed off, clearing his throat. "And from what others have told me, their mates were the same way: one scent that only got stronger."
The younger man swallowed nervously, shrugging. "I've been told that before. I honestly don't know why I'm different. My natural scent is there, but unless it's been identified, typically through sex, most people can't tell. That's probably the 'musky undertones' you think you're smelling."
"I'm not trying to make you uncomfortable," Hotch murmured softly, gently rubbing Reid's arms. "I was only curious. I don't think it's bad, just... intriguing. Besides, it should make your future mate feel special. Only he or she will ever get to experience your scent so potently."
"He," Reid blurted, a flush coloring his neck and face a pretty pink color. "I, um... Through experimentation, I'm fairly certain I will mate with a male."
Hotch chuckled before amending, "All right; then he will be a very lucky man."
Reid practically beamed at the praise, and then he released a sigh of relief that had Hotch looking at him confusedly. "Oh, finally." Hotch's confusion didn't last long, and he hissed as Reid planted his feet on the ground and pushed up and off of him before collapsing against the sheets. "Well, get down here," Reid demanded grumpily, and Hotch found his brows raising.
"Pushy little Omega, aren't you?" he murmured, his voice thick with amusement, as he stretched himself out next to the younger man. Reid grumbled before snuggling up against him, rubbing his face against Hotch's chest.
"Just get some sleep while we still can. The next wave is bound to be the start of the worst ones," his Omega muttered as Hotch curled his arms around him. Knowing Reid was right, he settled down to get as much sleep as he could.