Sin in Motion

~Siena~

I push the heavy cab door open. The thick, salty air of the Spanish coast hits my face the second I step out into the brilliant morning sunlight. I have never sweat through a sundress before. Not like this. Not with the sun barely even up and my bare thighs already soaked from the way I have been rubbing them together in the back of this damn car. The leather seat of the cab sticks to the back of my legs. My core is slick. I feel like some heat-struck little pervert. I smooth down the thin white fabric of my dress. I force my shaking hands to steady. I am trying hard to look normal. I need to act like I am just an innocent eighteen-year-old girl arriving for a luxury yacht cruise with my best friend’s family.

But every single time I blink, I see him.

I see the exact way he looked last summer. I picture him shirtless and wet by the edge of the estate pool. I remember the water dripping down his rigid chest. I remember his muscles pulling tight and flexing under his golden skin while he poured himself a drink. He moved like he owned the earth beneath his feet. I see the specific way his mouth curved when he said my name. I see the little silver ring sitting on his pinky finger. I memorize the thick, prominent veins running up his forearms. I obsess over the deep line between his brows that only appears when he is focused on something. I do not even know what he was focused on that day. I just pretended it was me.

I walked around that whole villa in tiny denim shorts. I wore no bra. I let my nipples press hard against my shirts. I pretended I did not feel his heavy eyes burning into my back every time I left a room. When I heard his bedroom door close late that night, I buried my face in my pillow. I touched myself so hard I saw stars behind my eyelids. I rubbed my slick clit until my whole body shook. My pussy throbbed for hours.

Now I am back. I am legal. I am dripping through the cotton gusset of my lace panties. I am about to face the man I have been obsessing over since before I even understood why my body reacted to his deep voice the way it does.

I lick my dry lips. The driver unloads my bags from the trunk. My stomach executes a wild, dangerous flip. My entire body buzzes with primal anticipation. The heat between my legs flares into a deep, hollow ache.

This is the dock. The massive yacht sits right there in the sparkling water. It is huge and white and gleaming under the sun. It looks like a floating fortress built for secrets and sex and scandal. The hired crew loads the final pieces of luggage onto the lower deck. The gentle ocean waves lap against the wooden dock. I can hear distant laughter carrying over the breeze. Champagne corks pop somewhere on the upper deck.

None of that matters. I turn my head. The world stops spinning.

I see him.

Vaughn.

He walks down the metal stairs of the yacht like a fucking sin in motion.

I do not breathe. I do not blink. I do not move a single muscle except for the way my knees damn near buckle at the sight of him. He is not wearing a jacket. His black button-down shirt is undone just enough to expose the hard, tanned skin of his upper chest. I want to sink my teeth into that muscle. I want to taste his sweat. The dark fabric is tucked into white linen pants that make his waist look lethal. A dark leather belt sits heavy against his hips. His sleeves are rolled up past his elbows. His forearms look massive. His skin is tan and glowing in the morning light. I swear if I die right now, I will die wet. My pussy clenches so hard a fresh wave of slick coats my core.

He does not say anything at first. He just stops at the bottom of the steps. He plants his large feet on the wooden planks of the dock. He stares at me. The silence stretches between us. It feels heavy and electric. He looks at me like he is trying to figure out what the hell I have turned into since last summer. He looks like he knows I am not a little girl anymore. His nostrils flare just a fraction. He looks like he can smell the slick, heavy heat pooling between my thighs.

I am pretty sure he can. The raw Alpha energy rolling off his broad shoulders is suffocating.

His dark eyes drag slowly down my face. His gaze moves from my loose hair to my parted lips. His focus drops to the bare, flushed skin above my neckline. He stares openly at the soft swell of my tits. They are barely held up by the thin spaghetti straps of my white sundress. I did not wear a bra today. I did not want to. I wanted this exact moment to happen. I wanted his dominant eyes on my breasts. Now that I have his attention, my clit is throbbing so violently I might faint on the spot. My nipples stiffen under the thin white fabric. They peak so fast it physically hurts. The friction of the cotton brushing against my sensitive peaks makes me want to whimper. All I can think is that this towering man is standing six feet away from me and my body is practically begging to crawl into his rough, demanding hands.

“Siena.”

Just that. One single word. My name. But the way he says it changes the air pressure in my lungs. His voice is low and slow. The sound is thick with a dark, primal hunger he is trying to hide. The vibration of his tone makes my spine lock up. Holy fucking hell. I am not surviving this. My pussy clenches around empty air. My throat goes bone dry. I want to drop to my knees on the dirty wooden planks and spread my legs for him.

I force my frozen legs to move. I take a small step closer to his massive frame. I swallow the lump in my throat.

“Hi, Mr. Kensington.”

I whisper the greeting. I try to keep my voice from breaking. It cracks anyway. I sound breathless and desperate. I probably sound like a ruined virgin begging for her first taste.

His sharp jaw tightens. A prominent muscle ticks along his cheek. His dark eyes narrow just a fraction as he looks down at my flushed face.

“Vaughn is fine.”

The ground drops out from beneath my feet. I know I am not surviving this cruise. That deep tone destroys my remaining sanity. That name is a loaded weapon. That casual drop of formality is a direct hit to my core. It is an open invitation. He is stepping over the line. He is acknowledging the shift between us. He is telling me he sees me as a woman. He is telling me I am not a child playing in his house anymore. He is giving me just enough rope to hang myself with. He is giving me just enough dark promise to drown in.

“Vaughn.”

I repeat the name. It tastes like absolute sin on my tongue. I let the syllable drag out. I watch his chest expand.

He stares at me for a second longer. In that split second, I see the flash of raw heat in his dark eyes. I feel the heavy, suffocating flare of Alpha tension pressing against my skin. The air grows thick and intoxicating. His massive chest lifts slightly as he takes a deep, deliberate breath. He breathes me in. He catches my scent. The sweet, heavy aroma of my arousal hits his senses. I do not even think he realizes he is doing it. It is pure instinct. It is raw, feral need overriding his civilized control.

My slick pulses between my legs. My body knows exactly what is coming. My inner walls throb with a deep, aching demand for his knot.

Then Chloe bursts out of nowhere. She is a human cockblock wrapped in pink sunglasses and boundless energy. She ruins the moment. She throws her thin arms around my neck before I can even process the sexual tension crackling between her father and me. She squeezes me tight. She starts squealing right in my ear. She rants about champagne flutes and luxury cabins and how hot the boys are waiting for us upstairs.

“Oh my God, you made it! I thought you were gonna miss it! The boat is insane, Siena. You are not ready. Come on, everyone is waiting! Wait until you see the rooms.”

She shouts the words over the sound of the ocean. She hugs me like she did not just interrupt a silent, full-body orgasm. I try to catch my breath. I try to force my racing heart to slow down. I nod dumbly as she grabs my wrist. She pulls me toward the yacht's ramp. She chatters endlessly about designer bikinis and endless booze. I have no choice but to follow her. My legs feel like absolute jelly. My heart beats out of control in my throat. My pussy is soaked and throbbing. My core is practically screaming at the fact that I just locked eyes with Vaughn Kensington and survived the encounter.

Barely.

I walk up the sturdy metal ramp. I can feel him standing behind me. I can feel his dark eyes burning into my ass. The short hem of my sundress sways with my hips. I know he is watching the movement. I can feel his iron control slipping. Just a fraction. The heavy weight of his gaze is a physical touch against my bare skin.

That is all I need to know.

Chloe talks so fast I can barely keep up with the words leaving her mouth. We step onto the lower deck. She rambles about specialty drinks and the hot tub schedule. She gossips about some couple who already hooked up in the downstairs cabin even though we all literally just boarded the yacht. I nod my head. I plaster a fake smile on my flushed face.

“Oh my God. That is wild.”

I offer the generic responses. I try to pretend I am not still clenching my wet thighs together with every single step I take. We climb the polished wooden stairs to the upper deck. The short back of my sundress keeps brushing against the curve of my ass. The light friction makes me imagine Vaughn’s large, rough hand gripping my flesh there instead. I imagine his thick fingers leaving dark bruises on my skin. The phantom sensation sends fresh waves of heat straight down to my clit.

We reach the top of the stairs. I see them.

The rest of the group is waiting for us. Four people are already gathered around the plush luxury lounge chairs set up under a massive white canopy. There are two guys and two girls. They are all deeply tanned. They are laughing and sipping expensive cocktails like this is their fourth consecutive summer vacationing in Saint-Tropez. One guy has sleeves of dark tattoos covering his arms. One girl wears gold hoop earrings the size of my fists. Everyone looks older than us. They look cooler. They look relaxed in this hyper-wealthy environment.

And me? I look like a desperate virgin with a secret daddy kink. I have a pulse in my clit so strong I might black out on the teakwood deck.

Chloe points them out to me. She treats the introduction like a military roll call.

“Okay, that is Jace. He is mine. Do not touch him or I will murder you. That is Gavin and Brooke. They break up like three times a day, so just smile and nod when they argue. And that is Phoebe and Nico. They are obnoxiously in love and you will probably want to push them overboard by Day Three.”

I lift my trembling hand. I wave at the group. I maintain my polite smile. I nod at the appropriate times. I say something polite to greet them. I do not even remember the words forming on my lips. My brain is entirely fried. My head is full of dark hair and broad shoulders and dominant Alpha energy.

My mouth opens. The next words that come out of my throat bypass my brain.

“Your dad looks really built.”

Oh my God.

The silence inside my head is deafening. Did I just say that? I said that. I actually said that out loud. To her. To his teenage daughter. In public. Surrounded by her older friends. I want to reach out and grab the words from the air. I want to stuff them back down my throat. But they are already hanging there. The sentence feels sticky and perverted and impossible to explain away. I freeze in place. The blood drains from my face. My stomach drops to the deck.

Chloe turns her head. She looks at me through her pink sunglasses. She raises one perfectly arched brow. She looks like she heard exactly what I said. She is graciously offering me a five-second window to walk my statement back before the situation gets weird.

Panic floods my veins. I open my mouth again.

“I mean not in a weird way! I am just saying he looks like he takes care of himself. Like he is fit. For his age. Not that he is old. I did not mean that. I just meant if he was not your dad, people would definitely think he is some hot ex-military guy who jogs shirtless through the woods or something. Not that I imagine him jogging. I mean, not often. Maybe once. Or twice.”

I speak faster than a bullet train. I babble like an idiot. I trip over my own tongue. I want to drown myself in the deep blue sea. I want to jump over the metal railing right now. I will tie a heavy iron anchor to my own ankle. I will gladly sink to the bottom of the ocean to escape this humiliation. I clench my hands into tight fists at my sides. My fingernails dig into my palms.

Chloe does not look disturbed. She just laughs. It is a full, honest, bubbling laugh. She covers her mouth with her manicured hand.

“Oh my God, Siena. You are such a weirdo.”

I squeeze my eyes shut for a second. The heat in my cheeks is unbearable.

“I did not mean it like that.”

I whisper the lie. I meant it exactly like that. I meant it more than anything I have ever said in my entire life. We both know it.

She waves her hand in the air. She dismisses my panic effortlessly. She turns her attention to the bartender mixing drinks nearby.

“It is fine. Everyone says that. My friends used to call him Alpha Daddy and I wanted to crawl into a hole and die.”

Alpha Daddy.

The words echo in my skull. Alpha Daddy. The title fits him perfectly. The image of him demanding obedience hits my brain. He is mine.

My pussy throbs so hard I have to clamp my jaw shut to keep from whimpering out loud. The ache between my legs is sharp and demanding. The heavy, pooling slick soaks deeper into my lace panties. The moisture spreads against my thighs. I let out a nervous, breathy laugh. I push a stray strand of hair behind my ear. I try desperately to pretend my face is not burning beet red.

“Well, I get it. He definitely has that whole power thing going on.”

Chloe shrugs her slim shoulders. She takes a sip from a tall glass someone hands her. She leans against the padded backrest of a lounge chair.

“He works out every morning. Like obsessively. He gets up at five in the morning. He lifts heavy weights. He runs in the deep sand. He fights imaginary people in the backyard like he is training for a brutal war. He does not even use headphones. He just growls.”

Growls.

My brain explodes into a million jagged pieces. My entire body turns into one giant, gaping need. A primal shiver runs down my spine. The image of Vaughn sweating in the early dawn light flashes in my mind. The thought of a deep, chest-rumbling Alpha growl tearing from his throat makes my knees weak. I make a pathetic sound. It is half gasp, half squeak, and half moan. I poorly disguise the wet sound as a cough. I cover my mouth with my hand. I pray to God no one hears it over the pulsing bass of the deck music.

“He sounds intense.”

I force the words out. My voice is raspy. I do not know what else to say without screaming that I want him to bend me over this polished wooden railing and fuck me stupid. I want his hands gripping my hips. I want his growl vibrating against my neck.

“He is a psycho about discipline.” Chloe continues talking. She has no idea what her words are doing to my body. “All that Alpha stuff. He always has to be in absolute control. Even of his own body. It is scary sometimes. But yeah. He is hot, I guess. If you are into terrifying men with emotional damage.”

Oh, I am. I so am.

I am aggressively into terrifying men with emotional damage. I want a man with thick, corded veins in his forearms. I want a man with brooding, possessive daddy eyes tracking my every move. I want a man with fists big enough to wrap completely around my fragile throat. I want him to choke me while he makes me moan into the luxury pillows of his cabin bed. I want to feel his massive, blistering knot swelling deep inside my tight pussy. I want him to stretch my walls apart. I want him to claim my bare body until I am sobbing from the intense pleasure of it. I want to be ruined by him.

My breathing turns ragged. My chest rises and falls in short, desperate bursts. My gaze unfocuses. I stare blindly at the wooden deck under my sandals. I am lost in the filthy, degrading fantasy. I can practically feel his heavy, dominant body crushing me down into a mattress. I can feel the phantom stretch of his thick, unyielding cock sliding into my dripping core. My inner muscles clench tight around the imaginary intrusion.

“Siena?”

Chloe waves her hand wildly in front of my face. The rapid motion pulls me out of the gutter. I snap back to reality. I blink rapidly. I shake my head to clear the filthy images.

“Huh?”

“You spaced out.”

“Sorry.” I clear my tight throat. I try to stand normally. I try to ignore the slick sliding down my inner thighs. “Probably jet lag.”

She nods her head. A wide, knowing grin stretches across her glossy lips. She pokes me in the ribs.

“Or maybe you are just thinking of getting laid soon. You virgin.”

I glare at her. I try to fight the blush creeping up my neck.

“I hate you.”

She cackles. The bright sound pierces my ears. She grabs my wrist again with a tight grip.

“Come on. Let's get you a drink before you keep on thinking of getting laid.”

I let her pull me across the sunlit deck toward the glowing open bar. I follow her lead blindly. My sandals click against the wood. I smile at the bartender. I accept the cold glass placed in my trembling hand. I wrap my fingers around the condensation on the glass. But my brain is checked out. It is permanently stuck on that one glorious, filthy image.

Vaughn.

Covered in sweat. Growling like a feral beast in the dawn light. Shirtless. Pushing his body to the absolute limit. Pure, unadulterated, dominant Alpha energy.

Fucking terrifying.

And all mine.

I take a slow sip of my fruity drink. The cold alcohol burns a path down my dry throat. I stare out at the sparkling blue ocean stretching toward the horizon. The deep resolve hardens in my chest. I do not care what it takes. I do not care about the rules. I do not care about the age gap or the fact that he is my best friend's father. I am going to play my cards exactly right. I am going to wait for the perfect moment. I am going to strip away that terrifying Alpha control. I am going to claim that sweaty, dominant man for myself.