Warning! THERE IS SMUT! BE WARNED, I, FOR MY FIRST EVER TIME, WROTE SOME, NOT A LOT, BUT SOME SMUT! enjoy~ 

Cassia's POV:

Over the next few weeks, the BAU was extremely busy, and so Spencer and I got even closer; spending late nights filing paperwork, going over case files and catching unsubs. However, this weeks case was particularly barbaric.

The briefing room buzzed with a mix of tension and excitement as the team prepared for our next move. We were in California, hunting a serial killer who targeted couples engaging in public sex. The unsub forced his victims to have intercourse, raped the woman, and then murdered both of them. Four couples had already fallen victim, and our only lead was that he hunted at popular hotels. The last place he had yet to hit was a 7-star luxury hotel near the beach.

"We need to send in two agents undercover," Rossi suggested, his eyes scanning the room. "They need to pose as his next potential victims to lure him out."

All eyes turned to Spencer and me. We had a reputation for handling pressure well, playing undercover roles convincingly, and, as everyone on the team had noted, having an undeniable chemistry. My heart raced at the thought of being on such an intimate mission with Spencer. It was a strange mix of professional excitement and personal thrill.

"You two up for this?" Hotch asked, his gaze serious.

Spencer and I exchanged a quick glance, silently agreeing. "We're ready," Spencer said, his voice steady.

We were briefed on the plan and given the key to a premium hotel room where we would be staying for the night. Hotch explained that we needed to pretend to engage in public sex, and the pool was identified as the perfect spot to lure the unsub. We both nodded, taking in every detail, making sure we knew exactly what to do.

Back in our hotel room, I took a moment to steady my nerves. The mission was risky, but the thought of being so close to Spencer in such a setting was exhilarating. I slipped into a dark purple bikini, the color complementing my tan skin and curvy body. When I walked out of the bathroom, Spencer's reaction was immediate—his eyes widened, and he visibly swallowed hard.

"You look... stunning," he said, his voice a bit strained.

"Thanks, Spence," I replied with a smile. "You ready for this?"

He nodded, though I could see the mix of nerves and excitement in his eyes. "Yeah, let's do this."

We made our way to the pool, trying to appear as natural as possible. The luxurious surroundings and the setting sun created an almost surreal atmosphere. As we settled into our roles, I couldn't help but feel a flutter of anticipation mixed with the gravity of our mission.

Spencer and I lounged by the pool, exchanging playful banter and laughter, trying to mimic the carefree demeanor of a couple on vacation. As the evening progressed, we moved closer, our touches becoming more intimate. I could feel Spencer's body heat, his proximity sending shivers down my spine.

"Remember, stay alert," Spencer whispered, his lips brushing against my ear. "He could be watching us right now."

I nodded, my senses heightened. We moved to the edge of the pool, our actions carefully choreographed to appear spontaneous. As we kissed, I couldn't help but feel the genuine chemistry between us, making it easier to sell the act.

The moment came when we needed to take it a step further. I straddled Spencer in the shallow end of the pool, our bodies pressed together. His hands rested on my hips, and I could feel his heart pounding against my chest. 

"You're doing great," he murmured, his breath hot against my skin.

"So are you," I replied, trying to keep my voice steady despite the electric charge between us.

Just as the tension reached its peak, I noticed a shadow moving near the pool's edge. I tensed, signaling Spencer with a subtle squeeze of my hand. He glanced up, his eyes narrowing as he spotted the figure lurking in the darkness.

"It's him," Spencer whispered, his voice barely audible.

We continued our act, keeping the unsub's attention on us. I could feel the adrenaline coursing through my veins, knowing that we were moments away from springing the trap.

Suddenly, the figure stepped closer, his eyes locked on us. He was within striking distance, and I could see the predatory gleam in his eyes. Spencer and I moved in perfect sync, breaking our embrace just as Morgan and Rossi, who had been waiting in the shadows, tackled the unsub to the ground.

"FBI! You're under arrest!" Morgan shouted, securing the man's hands behind his back.

The unsub struggled, but he was no match for the combined strength and skill of Morgan and Rossi. As they hauled him away, Spencer and I climbed out of the pool, breathing heavily, the adrenaline slowly ebbing away.

"You okay?" Spencer asked, his eyes full of concern.

"Yeah, I'm fine," I replied, wrapping a towel around myself. "We did it."

He smiled, relief and pride shining in his eyes. "We did."

Back in our hotel room, the reality of what had just happened began to sink in. We had successfully lured out a dangerous killer and put an end to his spree. As I dried off and changed into more comfortable clothes, I couldn't help but feel a sense of accomplishment mixed with the lingering thrill of our undercover operation. The adrenaline still coursed through my veins, and I could see it in Spencer's eyes too.

"That was intense," Spencer said, his voice a mix of exhaustion and exhilaration.

"Yeah, it was," I replied, sitting down on the edge of the bed. "But we did it."

He sat next to me, our shoulders touching. The tension between us was palpable, a silent acknowledgment of the closeness we had shared during the mission. I turned to look at him, our faces only inches apart. The intensity in his eyes took my breath away.

"Spencer," I whispered, unable to tear my gaze from his. "Tonight I felt that it was... something else."

"It was," he agreed, his voice low and husky. "And you were incredible."

I felt a surge of emotion, a mix of relief, gratitude, and something deeper, something that had been building between us for a while. Without thinking, I leaned in, my lips brushing against his. He hesitated for a heartbeat before responding, his mouth capturing mine in a passionate kiss.

The kiss deepened quickly, a release of all the tension and adrenaline we had been holding in. His hands cupped my face, fingers tangling in my hair as he pulled me closer. I responded eagerly, my hands exploring the planes of his chest through his shirt.

"Spencer," I breathed against his lips, "I need you."

He groaned softly, his lips trailing down my neck, leaving a trail of fire in their wake. "Cassia," he murmured, his voice thick with desire, "are you sure?"

"Yes," I whispered, my body pressing against his. "I'm sure."

With that, he lifted me effortlessly, laying me down on the bed. His hands roamed over my body, exploring every curve and contour. I tugged at his shirt, needing to feel his skin against mine. He quickly obliged, pulling it over his head and tossing it aside.

His body was lean and toned, and I couldn't help but run my hands over his muscles, marveling at the contrast of his strength and the gentle way he touched me. His hands slipped under my shirt, lifting it off me with the same urgency. The cool air hit my skin, making me shiver as he kissed his way down my chest.

Spencer's hands were everywhere, caressing, teasing, driving me wild. When his fingers brushed against the waistband of my pants, I arched into his touch, silently begging for more. He didn't disappoint, sliding my pants and underwear down in one smooth motion.

I gasped as his fingers found their way between my thighs, teasing me with a light touch before slipping inside. My hips bucked against his hand, seeking more of the delicious friction. His lips were on mine again, swallowing my moans as he brought me closer and closer to the edge.

"Spence," I panted, "I need you inside me. Please."

He groaned at my words, his eyes darkening with lust. He quickly shed the rest of his clothes, and I marveled at the sight of him, every inch of him perfect. He positioned himself between my thighs, his eyes locking onto mine as he slowly entered me.

The sensation was overwhelming, a perfect blend of pleasure and intimacy. We moved together, our bodies finding a rhythm that spoke of our deep connection. Each thrust, each touch, each kiss brought us closer to the edge.

"Spencer," I moaned, my nails digging into his back, "I'm so close."

"Me too," he groaned, his pace quickening. "Let go, Cassia. I'm right here with you."

With a final thrust, I shattered, my orgasm washing over me in waves. Spencer followed moments later, his release mingling with mine as he collapsed on top of me, our bodies still intertwined.

We lay there for a while, our breathing slowly returning to normal. He rolled off me, pulling me into his arms, and I rested my head on his chest, listening to the steady beat of his heart.

"That was amazing," he whispered, pressing a kiss to the top of my head.

"It was," I agreed, snuggling closer. "I think we make a pretty great team, Spence."

He chuckled softly, his arms tightening around me. "Yeah, we do."

As we drifted off to sleep, the events of the night fading into a haze of satisfaction and contentment, I couldn't help but feel that this was just the beginning of something incredible between us. And whatever challenges lay ahead, I knew we would face them together.

...

heyyy, how ya'll doing?~ anywho, hope you enjoyed and plz gimme loads of feedback so I can improve! if you have any req plz lemme know and hope you have a fabulous day!~