Chapter 5: Surrender in the Water
The world dissolved into sensation, a roaring in my ears that was part jets, part blood. His finger inside me was an anchor, a claim. My hips made that small, betraying movement again, and a low groan vibrated from his chest into mine.
“Sabrina,” he breathed against my lips, the name a brand.
In one fluid, shockingly strong motion, his hands gripped my waist and lifted me. Water streamed from my body as he settled me onto his lap, straddling him. The new position was a revelation of shocking intimacy. My thighs, so much slimmer and softer than my old ones, framed his hips. The coarse, wet hair on his chest scraped directly across my stiff, aching nipples, and I cried out, the sound sharp and foreign. The fabric of my bikini top was a maddening barrier, now soaked and abrasive.
His hands were everywhere, sliding down my back to grip the swell of my ass—small, pert mounds that fit perfectly in his broad palms. He squeezed, pulling me tighter against him. I could feel him then, the hard, thick length of his cock pressing insistently against the damp triangle of my bikini bottom, a blunt demand separated from my flesh by a whisper of wet fabric.
My mind was a radio picking up two stations at once. One was pure, screaming Justin: This is Mark. Your best friend. You’re a man. This is wrong. Stop this now. The other was a deafening broadcast of physical need, a symphony of nerve endings I didn’t own, singing a chorus of more, closer, now.
He kissed me again, deeper, his tongue mapping the smaller contours of my mouth. My own tongue, so annoyingly dainty, danced with his. I tasted the IPA we’d been drinking, but it was different now—lighter, fruitier on these changed taste buds. The bitterness was almost gone.
“Can’t believe how perfect you are,” he mumbled between kisses, his hands tugging at the knot of my bikini bottom at my hip. The loop gave way with a slight, definitive pull.
Panic, cold and clear, finally broke through the heat. I pulled my mouth from his. “Mark, wait—”
It was Justin’s protest, but Sabrina’s voice issued it—a breathy, high-pitched tremor that sounded like encouragement. He took it as one.
“Shhh, I’ve got you,” he soothed, his voice thick. One hand stayed splayed on the small of my back, holding me firm. The other slid the loosened fabric aside.
The night air hit newly exposed skin, a shocking coolness on the heat he’d built. Then he was guiding himself, the broad, smooth head of his cock nudging against a part of me that was pulsing and slick and utterly, terrifyingly alien.
My whole body tensed. A whimper escaped my throat. This was the line. The physical Rubicon.
He looked up at me, his eyes black in the low light. “Relax,” he whispered, but it wasn’t a request. It was an expectation.
And my body, this traitorous vessel, obeyed. The tension leaked out of my muscles. He shifted his hips, applying a steady, inexorable pressure.
The initial breach was a shock of tightness, a sting of impossible fullness. I gasped, my fingers digging into the hard muscles of his shoulders. My inner muscles fluttered wildly, trying to accommodate this invasion. He was so much larger than his finger, stretching me in a way that felt both punishing and necessary.
“Jesus,” he hissed, his head dropping to my shoulder. He held still for a second, letting me adjust. “You’re so tight.”
He began to move. A slow, deliberate withdrawal, then a deeper, smoother thrust. The water sloshed around us, a rhythmic slap against the tub walls, marking time. Each movement dragged a new fire through my core. The sensation was… profound. It wasn’t like anything I could have imagined from the other side. It was a deep, internal friction, a filling of an empty space I never knew existed. A pleasure so specific and consuming it felt like dying.
My breasts jiggled lightly with his rhythm, a strange, weighty bounce that was both embarrassing and intensely stimulating. My smaller frame was completely enveloped by his; I was a doll in his arms, being moved by his strength. My painted pink nails looked absurd against his tanned skin.
I buried my face in the crook of his neck, hiding. The smell of him—chlorine, male sweat, the faint cedar of his cologne—was my entire universe. My own higher, ragged breaths panted in my ear. I could feel everything: the water lapping at my lower back, the rough texture of the tub siding against my knuckles, the incredible, wet-silk glide of him inside me. The ache had crystallized into a sharp, building coil of tension deep in my belly.
He increased his pace, his breathing becoming ragged grunts in my ear. One hand fumbled between us, his thumb finding the swollen, hyper-sensitive nub above where we were joined. He pressed.
The coil snapped.
A white-hot wave of pure, mindless sensation crashed through me. It wasn't an orgasm like I'd ever known. It was a total systemic meltdown, a clenching that started deep within and radiated outward in violent, shuddering pulses. My back arched violently. A choked, wordless scream was ripped from my throat—Sabrina’s throat. I saw flashes of light behind my eyelids. My toes, in their tiny size five sandals, curled against his calves.
He followed moments later. A final, deep thrust that seated him to the hilt, a guttural roar that was all Mark, and then a hot, flooding pulse inside me. The intimacy of it was the most violating thing of all. He held me there, trembling, as the internal spasms slowly, slowly subsided.
The world rushed back in. The hum of the filter. The distant chirp of crickets. The cool night air raising goosebumps on my wet arms.
He nuzzled my neck, pressing a soft kiss there. “Wow,” he murmured, his voice sated and slow. “Just… wow.”
I couldn’t speak. I was an emptiness housed in trembling flesh. Justin was gone, buried under the avalanche of what had just happened. I was just a shell, filled with his heat and the echoing, shameful aftershocks of a pleasure I never asked for.
He gently lifted me off him, a slick separation that made me wince. He settled me beside him in the water, an arm draped heavily over my shoulders, pulling me into his side. My body, weak and boneless, complied. I stared at the bubbling water, at our reflected, distorted shapes in the dark glass of the tub’s rim.
He reached for his beer bottle on the ledge, took a long swallow, and handed it to me. “Thirsty?”
I took it with numb fingers. My smaller hand could barely wrap around the bottle neck. I sipped. The beer was warm and flat. It tasted like ash.
We sat in silence for a long time. His breathing evened out into the slow rhythm of approaching sleep. The logical part of my brain, struggling to reassert itself, whispered a new, chilling terror.
He thinks you’re Sabrina. An eighteen-year-old girl. His best friend’s cousin.
What happens when he wants to do this again?
What happens when I want to do this again?
Mark’s head lolled back against the tub, his eyes closed, a faint, satisfied smile on his lips. I sat trapped in the circle of his arm, in the warm, filthy water, feeling his spend begin to leak out of a body that was never mine. The patio lights twinkled merrily, and somewhere inside the house, the real Sabrina was asleep in my body.