UNKNOWN TERRITORY - A.H x Reader x S.R
About: Spencer walks in on Aaron going down on you. So he watches the two of you have sex.
A/N: this didnât come out exactly how i wanted it to but i have so many ideas on this dynamic lol. so feel free to send aaron x reader x spencer requests! credit for border goes to cafekitsune on tumblr!
Warnings: NSFW, MDNI, office sex, unprotected sex, oral (f), getting caught, voyeurism, masturbation (m), whiny Spencer, whiny reader, making out, Spencerâs a virgin and receives a handjob
Word Count: 1.5k
Working late at the Bureau wasnât one of your favorite things to do, especially after working a really long case. No one else was at the Bureau except you and Aaron, everyone had already gone home. You were exhausted and just wanted to go home as well. But you also didnât want to be alone. You wanted to be between Aaronâs sheets as he fucked you into a blissful state. Instead, you were sitting on Aaronâs desk, thoroughly distracting him from the work he claimed he absolutely had to do, as he was on his knees with his face buried between your legs.
Your legs rested on Aaronâs shoulders as his tongue lapped around your cunt, coating his tongue with your juices. Your hands gripped the desk as you let out the most beautiful noises, soft moans with quiet whimpers. Aaronâs tongue dipped to your hole, causing his nose to grind against your clit. You gasped, moving a hand to Aaronâs head as your eyes fluttered shut. You gently tugged at his hair, causing Aaron to groan against your pussy. The sound sent vibrations through you, making you buck your hips in response.
You knew exactly when this sexual relationship began with Aaron. About four months ago, the two of you were forced to share a room in the rural countryside in Vermont for a case with only one bed. So naturally, you ended up with your face buried in the pillow as Aaron fucked you into oblivion. And you had absolutely no regrets.
Aaron worked meticulously at eating you out. He loved when he could just bury his face between your thighs. The amount of times youâve woken up with his tongue inside of you was more than often whenever he slept at your place. Your pussy was like his happy place and he never failed to show you that. He moved his lips against your cunt, slurping as he sucked on your clit.
You whined, still gripping Aaronâs hair. You opened your eyes to look down at him, only to see someone standing at the door. You gasped. âS-Spencer,â You said, eyes widening.
Aaron stopped his movements, looking up at you with confusion. âWhat?â He deadpanned.
You pointed a shaky finger at the doorway. âSpencer,â You said again. Aaron turned his head, seeing Spencer standing in the doorway with a file in hand. Spencer was frozen, shocked at the scene in front of him. His lips were parted, his eyes wide like a deer, his cheeks were pinkened, and he was sporting a very obvious hard-on.
Nothing was spoken between the three of you for a good few seconds. You were still exposed, your pants sitting comfortably on Aaronâs couch in his office. Your legs were still on Aaronâs shoulders. You thought Aaron would stop the whole ordeal, being the most logical person in the room because he was your and Spencerâs boss. However, instead, he looks at Spencer and then at you and says âReid, if youâre going to stand there and watch, you can at least come in and close the door,â before diving back into eating you out.
The action caused you to gasp and moan, your hand going back to Aaronâs hair. Spencer quickly walked into the office, closing the door behind him. He stood awkwardly in the room, watching the scene before him. He bit his lip, watching as Aaron ate you out. The way your body reacted to Aaronâs touch, the way your lips parted in an âoâ. You looked as though you were in Heaven, basking in the pleasures that Aaron bestowed on you. And Spencer couldnât look away. He didnât want to. Spencerâs never done anything remotely sexual so his experience is very much nonexistent. What better way to learn to pleasure someone than to watch it happen right in front of you?
The look you were giving Spencer as Aaron ate you out was one that Spencer would likely jerk off to frequently. He had expected that you would look at Aaron as if he was the one pleasuring you but instead, your lustful gaze met Spencerâs doe eyes, as though you wanted him to join. And as you let out a loud moan, biting your lip when Aaron sucked on your clit, you made a come here motion to Spencer. Spencer was quick to walk over to you, placing the file that was in his hands on Aaronâs desk before taking a seat next to you on the desk. He looked at you, waiting for you to say or do anything.
You tilted your head towards Spencer, looking at him. âKiss me,â you breathed out.
And Spencer didnât need to be told twice as he put his lips onto yours.
Aaron glanced up as he continued eating you out, his hands on your thighs. He saw you and Spencer kissing, unable to help the small chuckle that escaped his lips against your cunt. The action of itself caused you to moan against Spencerâs mouth, allowing his tongue to explore you. Your kisses with Spencer were slow but hungry. Both of your hands were tugging at Aaronâs hair.
You could feel yourself getting closer. With the way Aaronâs tongue kept moving around on your pussy and how his nose would brush against your clit. The way Spencerâs tongue moved inside your mouth as he kissed you. The little cherry on top that sent you over the edge was the way Spencer had tentatively put a hand on your left boob, massaging the flesh through your shirt. You came with a loud moan that was muffled by Spencerâs mouth. Your thighs clenched around Aaronâs face, shaking as your orgasm overcame you.
When you finished, you pulled away from the kiss to look down at Aaron, breathing heavily. He pulled away from your cunt, taking your legs off of his shoulder as he stood up. His face was glistening from your juices. He took the back of his hand, wiping his chin before licking his lips. It wasnât long until the three of you were undressed and moved to Aaronâs couch.
Spencer was sitting on the left side of the couch while Aaron had you bent over on the rest of it, his cock thrusting into you hard. Your eyes were rolled back as Spencer watched you. He had his cock in his hand, stroking himself with his fist. He thumbed the tip of his cock, spreading around the precum that had accumulated, causing him to let out a whine.
That noise sent a shiver down your spine, causing your pussy to flutter around Aaronâs cock. âOh you liked that didnât you, baby?â Aaron groaned, giving you a particularly harsh thrust, eliciting a sharp moan from you.
âYes,â you whined, looking at Spencer.
Spencer really couldnât believe what was happening to him. He knew it shouldâve been wrong. The fact that you were his coworker and Hotch was his boss. And yet, he could hardly find himself caring when you looked so pretty getting railed by your boss. Spencer began stroking himself a bit faster, pumping his cock in rhythm of Aaronâs thrusts. But when your hand moved to wrap around Spencerâs, helping him jerk himself off? Spencer almost came right then and there. âO-oh fuck,â Spencer whimpered out, throwing his head back. His eyes met with Aaronâs as he turned his head to the side as Aaron gave him a smirk.
Aaronâs thrusts became more frenzied, chasing the pleasure that you both craved. The office was filled with the sounds of skin slapping skin, moans and whines from both you and Spencer, and the low groans that Aaron was letting out.
It didnât take long for Spencer to cum. His hips began meeting your fist and he was done for. His cum landed on his chest and stomach as Spencer let out the most beautiful noises you had ever heard.
The heat was building in your abdomen from Aaronâs thrusts. You were close and Aaron could tell. âGo ahead and cum for me, baby,â Aaron said, grabbing your ass and massaging it. His breathing was harsh just like his thrusts.
You came with a high pitched noise that was surely pornographic, a noise that will live in Spencerâs dreams frequently. You buried your head into the leather cushion, cumming from Aaronâs cock. Aaron continued his pace before letting out a loud groan, burying himself deep inside of you as he came.
Harsh breathing filled the air as the three of you came down from your highs. You looked at Spencer who was moving his gaze between you and Aaron. None of you spoke. But there was change in the way the three of you interacted from now on. This fateful night marked the night when Spencer became part of your dynamic with Aaron. It was uncertain as to where it would go or what would come of it. But all that mattered was teaching one another and exploring each otherâs bodies.

















