Taught by the Brother’s Best Friend

"Yes," I breathed, the word escaping my lips before my mind could catch up to the reckless pounding of my heart. It wasn't just a whisper; it was a confession, a surrender to the overwhelming heat that had been building between us for days.

Marcus didn't hesitate. The moment the syllable left my mouth, he turned. The polite distance, the averted gaze—it all vanished. He stepped into the shower stall, the glass door clicking shut behind him, sealing us in this swirling, humid world. The space was small, forcing our bodies close, and the sudden proximity made my head spin. He loomed over me, a towering wall of damp muscle and masculine intent, his presence consuming every inch of air.

"I was hoping you'd say that," he murmured, his voice a low rumble that vibrated against my chest.

Then his mouth was on mine.

It wasn't the tentative, exploring kiss I had expected from a first time. It was a takeover. His lips claimed mine with a force that stole the breath from my lungs, hot and demanding. He tasted of mint and the lingering smokiness of whiskey, a potent combination that made my knees weaken. I gasped into his mouth, my hands instinctively flying up to grip his shoulders for support. The fabric of his t-shirt was damp and hot under my palms, clinging to the hard ridges of muscle beneath.

His tongue swept past my parted lips, delving deep to tangle with mine in a rhythm that was instantly erotic.

He kissed me like he was starving, like he had been waiting years for this exact moment. My head fell back against the slick tiles, the cool ceramic a shocking contrast to the heat blooming inside me. Water sprayed around us, plastering my hair to my face and neck, but I couldn't care less. All I could focus on was the sensation of him—the rough scrape of his stubble against my chin, the large hand that spanned my waist, pulling me flush against his hard body.

I felt him then, thick and rigid through his jeans, pressing insistently against my stomach. A fresh wave of arousal crashed over me, mixing with the lingering anxiety. This was really happening. I was naked in a shower with Marcus Cole, and he was kissing me senseless.

His hands began to roam, exploring the slick expanse of my skin with a confident expertise that made me shiver. He traced the curve of my spine, his fingers rough and callused, leaving trails of fire in their wake. He molded his palms to my hips, pulling me tighter against him, grinding his hardness against my soft belly. The friction was delicious, sending sparks of pleasure shooting through my veins.

"God, look at you," he broke the kiss to mutter against my neck, his voice thick with desire. "So fucking perfect."

His lips found the sensitive spot just below my ear, sucking gently, and I moaned, my head lolling to the side to give him better access. The sound was wanton, foreign to my own ears, but I couldn't stop it. My body was responding to him with a mind of its own, arching into his touch, eager for more.

His hand slid up my ribcage, his thumb brushing the underside of my breast, teasing the heavy swell. My breath faltered, my nipples tightening into painful peaks in anticipation. When his hand finally cupped me, his weight warm and possessive, I thought I might melt right there. He kneaded the soft flesh, his thumb flicking over the sensitive bud, drawing a sharp cry from my throat.

"Sensitive," he observed, a smug edge to his tone. "I like that."

He didn't give me time to recover. His mouth descended on my other breast, hot and wet. He took the nipple into his mouth, suckling strongly, his tongue swirling around the areola in maddening patterns. I gasped, my fingers tangling in his wet hair, holding him to me. The sensation was intense, bordering on overwhelming, but it was exactly what I wanted. It was a sharp, piercing pleasure that shot straight down to my core, making my thighs clench together.

He spent a long time worshiping my breasts, alternating between deep, suctioning pulls and gentle, teasing bites. The water continued to cascade over us, plastering his shirt to his skin, but he seemed oblivious to it.

He was focused entirely on me, reading my reactions with an intuition that was almost scary. He knew exactly when to soothe and when to increase the pressure, pushing me higher and higher.

When he finally pulled away, I was panting, my chest heaving, my skin flushed a deep pink. He looked at me, his gray eyes dark with lust, a wicked smirk playing on his lips.

"Turn around," he commanded softly.

I hesitated for a fraction of a second, my old instincts warring with the new, burning desire. But the heat in his gaze brooked no refusal. I obeyed, turning to face the tiled wall, bracing my hands against the cool surface. I felt incredibly vulnerable like this, exposed, my back to him, water running down the length of my body.

I felt his hands on my shoulders first, strong and reassuring. He massaged the tension there, his thumbs working deep into the knots of my muscles. Then his hands slid down my back, tracing the curve of my spine, over the dip of my waist, and settling on my ass.

He groaned low in his throat, his fingers digging into the soft flesh. "You have no idea how many times I've imagined this."

He squeezed, hard, pulling my cheeks apart, and I felt a cool draft of air against my most intimate place. My face burned, but I didn't pull away. I pushed back against him silently, an invitation.

"I'm going to touch you now, Elara," he warned, his breath hot against my ear. "I'm going to make you feel good."

His hand slipped between my thighs from behind, his fingers seeking the heat of my center. He found me slick, soaked not just from the shower but from my own arousal. I heard him inhale sharply, the scent of my desire seeming to drive him wild.

"So wet," he praised, his voice a husky rasp.

He teased me at first, running his fingers through my folds, spreading my moisture, avoiding the place I needed him most. It was torture. I squirmed, trying to shift my hips to get him where I wanted him, but he held me firm, controlling the pace.

"Please," I whimpered, not caring how desperate I sounded.

"Please what?" he teased, his fingers circling my clit without touching it directly. "Tell me what you want."

"Touch me," I gasped. "Please, Marcus."

He hummed, satisfied, and finally, his fingers made contact. He stroked my clit directly, his movements firm and sure. The sensation was electric, a jolt of pure pleasure that made my knees buckle. He caught me with his free arm, holding me up against him, his other hand working me with a practiced ease.

He didn't just rub; he explored. He mapped out every inch of me, learning what made me gasp and what made me moan. He pressed on the bundle of nerves, then slid lower to circle my entrance, gathering more wetness before returning to my clit. The rhythm was slow and maddening, building the tension in my gut until I was trembling all over.

The water beat down on my back, mixing with the sweat breaking out on my skin. The small bathroom echoed with the sounds of our heavy breathing, the slap of wet skin, and the wet, slick sounds of his fingers moving against me. It was the most erotic thing I had ever experienced.

"Does that feel good?" he asked, his teeth grazing my earlobe.

"Yes," I breathed, my eyes squeezing shut. "So good."

"Good," he said. "Because I'm just getting started."

He pushed one finger inside me, and I gasped at the sudden intrusion. It was a strange, stretching sensation, not painful, but intense. He stilled, letting me adjust, his thumb brushing my clit in soothing circles.

"Relax," he murmured. "Let me in."

I took a deep breath, forcing my muscles to unclench. He began to move, sliding his finger in and out, slowly at first, then faster. He curled his finger upwards, finding a spot inside me that made me see stars. I cried out, my head falling back against his shoulder.

"Right there?" he asked, knowing the answer.

"God, yes," I moaned.

He added a second finger, stretching me further, the pressure building. The dual sensation of his fingers inside me and his thumb on my clit was almost too much. I felt like I was spiraling out of control, climbing towards something unknown but powerful.

"Let go for me, Elara," he urged, his voice rough. "Come on my fingers."

His words were my undoing. The combination of his skilled touch and the dirty talk sent me flying over the edge. My orgasm crashed over me like a tidal wave, my body convulsing in his arms. I cried out, my inner walls clenching around his fingers, waves of pleasure ripping through me. It was long and intense, leaving me breathless and weak-kneed.

He held me through it, his arm wrapping around my waist to keep me upright as I shuddered and gasped.

When the aftershocks finally subsided, I slumped against him, utterly spent.

He slowly withdrew his fingers, and I felt the loss immediately. He turned me around to face him, his gaze searching mine. He looked satisfied, a predator who had caught his prey, but there was a tenderness in his eyes that surprised me.

"You're incredible," he said softly, leaning down to kiss me again. This kiss was slower, sweeter, tasting of the lingering pleasure.

I kissed him back, my hands fumbling with the waistband of his jeans. I wanted to see him, to touch him, to give him even a fraction of the pleasure he had just given me.

He helped me, undoing the button and zipper, pushing the wet denim down his hips. He kicked them aside along with his boots, standing before me in nothing but his boxers. The wet fabric clung to his erection, outlining the thick length of him. My eyes widened, a spike of nerves mingling with my renewed arousal.

He hooked his thumbs into the waistband and pushed them down. His cock sprang free, thick and proud. It was bigger than I had expected, the head flared and angry-looking, veins running down the shaft. I stared, fascinated and slightly intimidated.

He saw my look and chuckled, wrapping his hand around his length, stroking slowly. "Don't worry," he said, his voice dropping to a sinful murmur. "I'll make sure you're ready."

He stepped closer, backing me against the wall again. He lifted one of my legs, wrapping it around his waist, opening me up. The head of his cock nudged against my entrance, hot and hard. I gasped, my body tensing in anticipation.

"Look at me," he commanded.

I met his gaze, my heart hammering against my ribs.

"I want you to remember this," he said. "Every single second."

He reached between us, positioning himself at my entrance. He pushed forward slowly, the thick head stretching me wide. I groaned at the sensation, a mix of burning stretch and intense fullness. He stopped when he was an inch in, letting me breathe, letting me adjust.

"Breathe, Elara," he coached, his jaw tight with restraint. "Just breathe."

I exhaled a shuddering breath, relaxing my muscles. He pushed in another inch, then another. The sensation was overwhelming—too much, and not enough. I felt invaded, claimed, owned. He was filling me up, stretching me in ways I hadn't thought possible.

Finally, he was fully seated inside me. I gasped, feeling impossibly full. He stilled, burying his face in my neck, breathing hard.

"Fuck," he gritted out. "You're tight."

He waited for a moment, letting me get used to the size of him. Then, he started to move.

He pulled out almost all the way, leaving just the head inside, before thrusting back in, slow and deep. The friction was incredible, sending sparks of pleasure shooting through my veins. He set a steady rhythm, each stroke deliberate and powerful. My hands gripped his shoulders, my nails digging into his skin as he fucked me against the shower wall.

The water was still running, but I didn't feel it anymore. I was lost in the sensation of him—the stretch, the fullness, the overwhelming pleasure. He was hitting that spot inside me with every thrust, driving me higher and higher all over again.

"Marcus," I moaned, my head falling back. "Oh god."

"That's it," he encouraged, his voice strained. "Take it. Take all of me."

He increased his pace, his thrusts becoming harder and faster. The sound of skin slapping against skin echoed in the small room, mixing with our heavy breathing. He lifted my other leg, wrapping both around his waist, impaling me fully on his cock. I was suspended in his arms, completely at his mercy, and I loved it.

He angled his hips, hitting a spot that made me cry out. "There," I gasped. "Right there."

He smirked against my neck, focusing his attention on that spot, driving into me with ruthless precision. I could feel the pressure building again, that coil of tension tightening in my gut.

"You're going to come again for me," he stated, it wasn't a question. "Come around my cock."

His words, combined with the relentless stimulation, pushed me over the edge. My second orgasm hit me harder than the first, a blinding explosion of pleasure that made me scream. My body convulsed, my inner walls clamping down on him, milking him as he thrust through my spasms.

He groaned, his movements becoming erratic. "I'm close," he warned.

With a final, powerful thrust, he buried himself deep inside me and came. I felt him pulse, his warmth flooding me, marking me from the inside out. He held me tight, his face buried in my neck, his breathing ragged and harsh.

We stayed like that for a long time, the water turning cold, his weight pinning me against the wall. Slowly, reality began to seep back in. The guilt, the confusion, the overwhelming realization of what I had just done.

He pulled out of me gently, lowering my legs to the floor. I felt shaky, unsteady, and leaned back against the tiles for support. He reached for the shampoo, lathering his hands, and began to wash my hair with a tenderness that made my heart ache.

The intimacy of the act was almost more than I could bear. This wasn't just sex. This was possession. This was a claiming.

He rinsed my hair, the water cascading over us, washing away the evidence of our joining. When he was done, he turned off the water, the silence sudden and loud in the small room.

He grabbed a towel from the rack—miraculously, there was one there now, perhaps he’d brought it in with him—and wrapped it around me. He rubbed my back, his touch soothing.

"You okay?" he asked, his voice quiet.

I looked up at him, my eyes searching his. "I... I think so."

He nodded, a small, satisfied smile playing on his lips. He stepped out of the shower, grabbing another towel for himself. I followed him, my legs feeling like jelly. We stood in the steam-filled bathroom, the air thick with the scent of sex and vanilla.

Then, a chime cut through the silence.

My phone, sitting on the counter, lit up with a notification.

Marcus turned to look at it, then back at me, a knowing glint in his eyes. "You might want to check that."

I picked it up with trembling fingers. The screen was bright in the dim light. The message was from Leo.

Two words. Simple. Devastating.

I do.