Questionable Theories
Inspired by this request!
Summary: You end up in a couple of tight situations with Spencer, and he decides that the body language you're displaying is an obvious sign of claustrophobia rather than a desperately horrible case of sexual attraction.
Warnings: smut, 18+, shower sex, unprotected sex, sexual frustration, fingering, minimal foreplay etc.
Masterlist
Spencer Reid was a budding anthropologist.
To be clear, he was very much a physicist, a mathematician, an engineer, a Supervisory Special Agent, and many other things. But he reasoned that a Bachelor’s Degree in a subject only cleared him to be someone who dabbled in anthropology.
And anthropology told him that you were hiding something. He had studied human behavior for years, and he had some qualms about using his knowledge as a profiler against his friends and colleagues - it wasn’t nice to psychoanalyse each other, he had been told many a time - he felt that certain scientific observations needed some further study.
Take, for example, the observation of societal reactions to small or tight spaces. While Spencer knew for a fact that many people had a fear of small, enclosed spaces, also known as claustrophobia, he knew you were not one of those people.
And yet, here you were, squashed against his side in a packed elevator, displaying a heightened heart rate, higher body temperature, and flashes of discomfort only otherwise present in those with the fear.
You’d gotten onto the elevator happily enough, he’d noted. There was no trepidation or avoidance. You hadn’t once suggested taking the stairs instead. But on the second floor, a crowd of people had gotten in, and you’d been left pressed so tightly against Spencer’s chest that he could measure your pulse no problem.
Struggling to find something to comfort you in your distress, Spencer settled for a hand on your back, wrapping it around you to keep you from bumping into any more people. Morgan had already told him that elevator death statistics rarely comforted those stuck in and/or using them, and he didn’t want to alert the elevator full of FBI agents that you were in any form of distress.
Touching you, however, almost made it worse. He noted a second spike in your pulse, before you began measuring your breathing slightly more so it would calm down.
He wanted to help; he surely did, but there was only one more floor before you both reached the BAU, and before he could think of anything truly comforting to say, you’d pushed through the crowd of people and started walking to your desk as if nothing in the world was wrong.
He almost missed the beat of your heart as you walked away.
From that day on, Spencer made it his mission to figure out if you were struggling with claustrophobia or rather with something more akin to enochlophobia, a fear of crowds.
It was rather lucky then that after a few days again, you found yourselves both back in an elevator, though this one was much less crowded. Spencer was almost disappointed that he couldn’t test both variables at once to repeat the pattern of the first observation, but luck was on his side when, after all the other inhabitants of the elevator alighted on their work floors, the elevator decided to break down with only the two of you left on it.
“You have got to be kidding me,” you said, shutting your eyes in silent defeat as the elevator lights switched themselves off.
“I guess the power just went out,” Spencer said, moving a step or two closer to you to buzz the alarm, and noting the way you flattened your back against the wall to avoid him further.
After notifying the building maintenance again, he stopped and stayed near you.
“Statistically, this won’t take too long, the-”
“Spencer, if you start telling me facts about elevator breakdowns, I’m going to have a breakdown myself.”
Nodding quickly, he wisely shut his mouth, but he didn’t attempt to move back. As the next floor doors were pried open by firefighters a few moments later (the perks of a job at Quantico, expedited rescues), he stepped further into your personal space.
You couldn’t escape him without completely obviously swerving to the opposite side of the elevator, which might be dangerous considering the quick repair work that was happening on it, so you instead tried your best to hold your breath and die.
It was better than letting your mind run away with the thought - the tempting, very detailed, and somewhat scary thought - of Spencer pinning you against the wall and doing whatever the hell he wanted with your body.
There was a certain level of detail your mind went to after the boundary of personal space had been crossed, and unluckily for you, Spencer was crossing it a lot these days. You were left feeling absolutely, devastatingly horny, with an aftertaste of guilt from thinking these things about your coworker.
“Could you-” you coughed, trying to free your voice from any squeaks. “Could you step back a bit?”
The Spencer in your horny brain would’ve pinned your hands above your head and asked you if you really meant that, which of course you didn’t, you wanted to feel his hands all over you.
The real Spencer seemed to take this instead as confirmation of your fear, and backed up immediately, staying as still as a wildlife rescuer trying to calm a shaking abandoned puppy.
If only you were shaking in fear and not months of accidental sexual tension turned up to the max.
You were surprised that Spencer himself hadn’t noticed how you desired him carnally. You couldn’t hold his eye contact, and you wouldn’t even let yourself brush against him in fear that you would say something embarrassingly true. You thought these to be pretty easily defined as measures of one with unwanted sexual desires.
Spencer, however, went with enochlophobia.
“You two good down there?” Emily yelled from her perch on the floor just above you, comfortably situated between the firefighters who were currently putting a hold in the door to help you shimmy out of it.
“We need you two to get out of there quickly. We have a case in Atlanta. Wheels up in 30,” she said, reaching a hand down for your bags as the firefighters urged you to grab onto them so they could lift you.
A sudden wave of relief washed over you. Work! Real, true, and honest work to distract yourself with. A case where you could escape impure thoughts for the time being would be perfect.
You must’ve enjoyed the moment a second too long, though, as Spencer once again flooded your senses.
With a hand on your hip, chaste and purely platonic from anyone else's perspective, Spencer encouraged you forward, to meet the reach of the team of firefighters.
“It’s okay,” he said, his voice low and hot in your ear. He was probably giving himself a pat on the back for comforting you. “You’re doing great, just hang in there.”
Helping to send your bags up to Emily, he reached around you, his chest hitting your back, his entire body crowding yours once again near the edge of the space.
Every touch felt electric, and you wished to god it did not. You let the team of firefighters drag you out of the hole you were physically in, even as you sank further into the one you were in mentally.
After confirming his suspicions, Spencer took it upon himself to be your silent protector. If you’d had any clue that was what he was doing, you’d have definitely thought it cute.
Instead, you were just on edge whenever he so much as breathed in your direction.
He sat next to you on the jet, going so far as to ask you if you had any problem with turbulence even though you’d been working with him for the last year and he’d travelled in a plane with you. When he leaned over you to open the blinds to the window, you twitched away from his hand, so sure that it was about to land somewhere inappropriate.
He sat in the back of the van beside you when you landed, getting strange looks from every other member of the team because he was usually very serious about sitting front and centre. The stares only got more intense when he tried to put your seatbelt on for you.
“Spencer,” you whispered sharply as he stretched across you for the second time that day. “I’ve got it.”
He quickly retreated into his seat and even seemed a little disappointed in himself.
Spencer wasn’t entirely sure why he was being so intense either. He’d found out about your so-called weakness, and it was like some part of him leaped into protector mode. He wanted to be closer, to study every reaction, to make things easier for you.
He really couldn’t help it when he volunteered to room with you.
With three rooms available with the company card, Rossi took the initiative and booked his own private suite, leaving Emily and JJ, Hotch and Morgan, and of course yourself and Spencer to cosy up in twin rooms.
“I’ll grab that,” Spencer said, grabbing your bag for you and climbing up the stairs, notably avoiding the elevator either out of deference to you, or because he was similarly freaked out about the morning’s elevator accident.
“Spencer, I’ve got it,” you sighed, half exasperated, half dreamy. But he was already out of sight and unlocking the door to your room, walking in to inspect it.
You trailed along quickly, noting that he’d stopped rather suddenly at the door.
“Oh,” he said, staring into the room and lowering the bags he’d commandeered to the floor.
Of course, you’d been left without a twin room. You’d been left a standard double. With, of course, a single double bed.
For Spencer, he saw this as a scientific chance to keep exploring his own theories. Was it all people you were uncomfortable with? Would the close proximity of sharing a space highlight any discomfort you had with people in general? Would you refuse the room entirely, and leave, or would you push yourself through it?
You similarly had many plaguing thoughts: how the fuck were you going to get through the night without an embarrassingly horny wet dream, or at least some kind of Nyquil to knock you out cold before you could harass the man any further?
Neither of you had the chance to discuss your new living arrangements, as you were quickly - blissfully - called into the precinct to begin your case.
Twelve hours of traipsing around crime scenes and pulling longer hours than you had in months - purposefully - you were almost glad to be heading back to sleep.
Not that you were looking forward to discussing the sleeping arrangements, but because you’d had a few more strange encounters with Spencer across the day that you absolutely needed to be unconscious to fully avoid.
First, he’d taken it upon himself to angle himself between you and any other detectives you met on the case, which actually hindered your chance to ask about evidence and the facts of the case for a few hours, until Hotch had sent Spencer on an errand.
When he’d come back, he’d pulled you aside to talk, which was normal enough, except he’d pulled you into a storage closet to talk, and though he kept the topic strictly on the case, your brain had overloaded the second he’d pressed his hand against the wall beside your head and you’d sprinted back out of the closet, avoiding eye contact with anyone who you thought may have witnessed the entire exchange.
And then he’d insisted - insisted - on driving you home alone, turning down all the offers from the local PD to get you an escort so you didn’t have to worry about the unfamiliar roads.
Spencer patted himself on the back for seeing to your needs so well.
You wanted nothing more than to fall straight into bed and never get back out again, dumping your bag, and walking straight into the attached bathroom, as you began to undress so you could take a shower.
“Don’t mind me,” Spencer said as you popped a second button, sending you jumping across the already very small room.
Leaving you stood there in shock, clutching your shirt to your chest, though you were still more or less covered, he reached around you and placed his toiletries on the counter, practically pinning you (once again) to the sink.
You weren’t cognizant of your brain making the decision, but you felt your hands pushing up against Spencer’s chest, and shoving just deliberately enough to pin him to the solid shower stall door, turning the tables on him.
“What are you doing, Spencer?” you asked, shocked both at how professional you sounded and that your hands had yet to travel from his chest to any other part of his body.
“I’m dropping my toiletries bag off,” he said, the picture of nonchalance.
“I was about to get in the shower. I told you as much before walking in here. I was undressing.”
“Yes, but-”
“You pulled me into a closet earlier, you acted strange in the elevator, frankly, you’ve been entirely too helpful today, and I know you’re a kind person, but Jesus Christ, Spencer, there’s only so much I can take!”
“I know,” he said soothingly, a soft smile playing on his lips, and if you weren’t so frustrated, you might have swooned at the way he looked at you.
“You know what?”
“That…that this is hard for you, right? It’s totally normal to-”
“Oh god,” you whispered. He knew.
“No, it’s okay, really, it happens to a lot of people, this kind of thing is just a natural part of society, and-”
“Spencer, for the love of god, please shut up!” you nearly screamed, trying your best to keep your shattered emotions in tow.
“I just want us to be able to communicate clearly about this,” he said, and with that, he raised a hand to your face, brushing a hair aside quickly and tucking it behind your ear.
No longer in control of your actions, you had no choice but to let your body push closer to his and join your lips to his, suffocating his helpful smile.
You felt his shock, but then you felt his hands grip you a little bit closer, pulling you into him and pressing his lips back into yours with the same pressure.
You gasped for air, but he pulled you in closer still, turning you around to press you against the shower door, nearly tripping inside as you tugged and pulled at one another, needing to be closer, to be close at once.
“Fuck, Spencer-” you said as you drew away, pressing kisses along his chin and down his neck as he held you propped up against the wall.
He had been incorrect, he had been absolutely incorrect in the best way, and now his cock was throbbing in his pants and you were wrapping your legs around him as you moaned into his ear with every kiss, and he was so happy that he was incorrect.
His hands fumbled against the buttons of your shirt as you similarly worked against the zipper of his pants, desperate to get him free, to feel him inside you. But you both absolutely refused to detach from one another, lips once again finding each other as you stumbled blindly around the shower stall.
Another stumble was all it took for the, luckily hot, water of the shower to pour down on you, and you detached quickly to rid yourselves of now wet clothing before colliding again.
It was quick - possibly the quickest you’d ever consummated a relationship - and near silent, no spoken communication besides moans and nods, and the fingers that had been desperately gripping your waist instead moving to spread your legs. He stroked along your clit as your hands found his cock, pumping it once, twice, and once again before you begged in a single desperate moan, and he lined himself up with your aching hole, and pressed himself in.
Blissful is how he would describe it. You were lost for words, so you wouldn’t be able to even come up with anything that could do it justice.
Neither of you lasted long, you from the months of pining, and Spencer because he’d been entirely overwhelmed in the last twenty minutes, and he usually liked time to prepare for these things.
He continued stroking you through your release, and you panted, holding yourself up against a wall as he pulled out and stroked himself to completion.
Silently, and rather awkwardly, you turned off the shower and stared at one another for a beat before you both wordlessly stepped out of the shower and got yourselves ready for sleep.
After redressing yourselves in dry nightwear, you both sat at the edge of the bed, waiting for the other to say something.
“Just… out of interest, you’re not.. Claustrophobic, are you?” Spencer asked.
“No, why?” you replied, almost confused, before he grabbed and kissed you again. A distraction from revealing his monumental fuck up.
“No reason,” he said, pushing you down into the bed and slowly pressing his lips to your skin again, having enough time now to truly think out how he could treat you well.














