Alexia's POV The car hummed along the highway, leaving the worst of the potholed backroads behind us. My heart was still pounding so hard I could feel it in my throat. Damien's cock was still buried deep inside me, thick and pulsing, his cum slowly leaking out around where we were joined. I could feel the warm, sticky mess dripping down my thighs, soaking his shorts even more. Guilt hit me like a truck. What the hell did we just do? He was my stepbrother. Twenty years old, tattooed, cocky as hell... and I had just let him fuck me raw in the backseat while our parents sat less than two feet away. My pussy clenched around him at the memory, and I hated how good it felt. "Fuck... Alexia," Damien whispered, voice rough with the same conflict I felt. His hands gripped my hips tighter for a second, then he started to lift me off him. "We can't... we shouldn't have-" The moment his cock slipped out of me with a wet, obscene sound, a gush of our combined juices spilled down my folds. I whimpered softly, my walls fluttering around nothing. I was soaked. Sloppy. Dripping. The insides of my thighs were shiny with it. Damien froze. I felt his cock twitch hard against my ass as he stared down at the mess. "Fuck... you're still this wet?" His voice dropped even lower, almost angry at how turned on he was getting again. "Look at you. My cum's leaking everywhere." "I-I didn't mean to," I whispered, trying to pull my tiny black dress down. It was hopeless. The fabric was already ruined, clinging to my skin. My legs were trembling. I was eighteen, supposed to be the responsible one, and yet here I was-pussy throbbing, aching for more even as shame burned my cheeks. For a few minutes, he tried. He really did. Damien shifted me on his lap so I was sitting more sideways, his arms around my waist like a normal big brother steadying his sister on a long drive. He even grabbed his phone and pretended to scroll. But every time the car hit a slight bump, my bare, dripping pussy dragged along the hard ridge of his cock through his soaked shorts. The guilt was there, but my body didn't care. I was ruined. Too wet. Too sensitive. Every little movement made my swollen clit throb. The road finally smoothed out as we hit the main highway heading toward Grandma's place upstate from New York. No more potholes. Just clean, steady speed. For a moment, I thought we could behave. Damien's breathing grew heavier behind me. His hands slid under my dress again, one on my stomach, the other cupping my soaked mound. "Alexia... you're fucking flooding," he groaned quietly. "I can feel how sloppy you are. This pussy doesn't want to stop." "I'm trying," I lied, biting my lip hard. But my hips rolled back against him anyway. His cock was rock hard again, tenting his shorts obscenely. He tried one last time to be good. "We should stop now. No more. This is insane." But then he rubbed two fingers along my slit, spreading the mess, and I moaned too loudly. He cursed under his breath and pulled his cock out again-this time not to stop, but to line himself up. "Damien..." I breathed. "Shut up and take it," he growled softly, and thrust up hard. A serious, deep stab. I nearly screamed. My walls stretched around his thick length again, the wet squelching sounds louder now on the smoother road. I clapped a hand over my mouth, eyes rolling back as he started fucking me with purpose-long, powerful strokes that made my tits bounce under the thin dress. He was so deep. Every thrust hit that spot that made my toes curl. My juices were everywhere, coating his balls, soaking the seat beneath us. The guilt only made it hotter. Suddenly, he lifted me and bent me forward. I had to brace my hands on the back of Dad's seat to keep from falling. My face was inches from the headrest. "You okay back there, sweetie?" Dad asked, glancing in the rearview mirror. My voice came out shaky. "Y-yeah, Dad. Just... stretching my legs a little. Cramp again." Damien didn't even slow down. He gripped my hips and started pounding me in this new angle-brutal, wet slaps echoing quietly in the confined space. Plap. Plap. Plap. My sloppy pussy took every inch, creaming around his cock. Stepmom turned slightly. "Should we stop for a bit? Let you walk it off?" "No!" both Damien and I shouted at the same time. I felt him smirk against my shoulder. "We're good, Mom. Really." That was it. The last thread of restraint snapped. Damien pulled me fully into doggy style on the backseat, my knees sinking into the cushion as he railed me. Hard. Merciless. His hips snapped forward, driving his cock into my dripping cunt over and over. My face pressed against the back of Dad's seat with every thrust, muffling my whimpers. I was losing my mind. Pleasure crashed through me in waves. One orgasm. Then another. My eyes fluttered. The world started going blurry from how intense it was. I almost passed out, body shaking violently as a third climax ripped through me. Damien yanked me back onto his lap just in time, impaling me reverse cowgirl. "Ride me, baby. Come on. Give me more." I did. I rode him like I was possessed-bouncing on his thick cock, my ass slapping against his thighs. The dress was bunched around my waist. If anyone looked through the windows... we are gone.... Dad cracked the window open for fresh air. Cool highway breeze hit my exposed skin. Other cars were passing us. They could probably see something if they looked closely, but I didn't care anymore. I was too far gone. We fucked like animals. Damien's hands were everywhere-pinching my nipples, rubbing my clit, gripping my throat lightly to keep me quiet. I came again. And again. By the sixth orgasm I was a sobbing, trembling mess, tears of overwhelming pleasure leaking from my eyes. "Too much... Damien, I can't-" "You can," he panted, thrusting up to meet me. "You're already ruined, sis. Look at this sloppy fucking pussy. Can't stop creaming on your stepbrother's dick." The car slowed. Dad pulled into a rest stop. "Quick break for food. You two staying in the car?" "Yeah," Damien said immediately, voice strained as my walls fluttered around him again. "We're... comfortable." Mom smiled sweetly. "I'll bring you kids some shawarma and ice cream. Don't want you stepping out if you're not feeling well, Alexia." As soon as they walked away, Damien flipped me around to face him and fucked me even harder, his mouth on my neck, sucking marks I'd have to hide later. "You're mine now," he whispered against my skin. "Too wet. Too full of my cum. No going back." I came one final time as Mom and Dad headed back toward the car, my face buried in Damien's shoulder to silence the scream. We were sloppy. We were ruined. And the road trip was only halfway done.
