All Chapters of We shouldn’t be doing this, Step-brother: Chapter 41 - Chapter 50

207 Chapters

Chapter 41: Keeping It Quiet

SiennaThe rest of that evening blurred by. Mom and Dad came home, filling the house with their usual chatter about work, while Jaxon and I sat on opposite ends of the couch pretending to watch TV. Only we knew the truth—the heat between us had been cut short by my cramps, leaving something unsaid and unfinished.But if Jaxon was frustrated, he didn’t show it.All week, he became something else entirely. A caretaker.Every morning, he checked in before school. “You good?” he’d ask, his voice softer than usual, his hand brushing my shoulder like he was afraid I might break.At lunch, he’d slide his juice toward me. “You need this more.”After classes, he’d carry my bag, pretending it wasn’t heavy when I knew it was.At home, he’d hover while I studied. Sometimes he’d make me tea, sometimes he’d grab a blanket and toss it over me before settling down with his game. But always—always—his eyes found me.And the strangest part? I let him.Because the truth was, by midweek, the cramps had f

Chapter 42: Midnight Mischief

SiennaThe front door opened with a burst of voices and bags rustling.“Kids? We’re back!” Dad’s voice carried into the house.I shot Jaxon a look—one of those we-just-almost-got-caught looks—and hurried to the couch. I curled up with a random book in my lap, pretending I’d been reading the whole time. Jaxon moved just as fast, slipping into a chair at the dining table with his notes open, head bent like he was deep in study.A second later, Mom and Dad walked in, arms full of grocery bags and folders. They stopped in the doorway, blinking at the picture we made.“Well, well, well,” Mom said, grinning wide. “Look at these two. Already in exam mode.”Dad chuckled, dropping his briefcase. “On a Friday night too. Should I frame this moment?”I forced a smile, flipping a page I hadn’t even read. “We’re just… getting ready early.”Jaxon hummed, tapping his pen like he was really solving equations. “Yeah, no distractions this weekend.” His eyes flicked up at me for half a second, and I knew

Chapter 43: The Cover-Up

SiennaMy heart nearly burst out of my chest when I heard that sound upstairs. It was faint—a floorboard creaking, maybe the shift of a door—but it was enough to make my stomach drop.Before I could even react, Jaxon was already moving. Quick, smooth, like nothing had happened. One second he was close to me, his warmth all over me, and the next he was back at the dining table, flipping his notebook open like the world’s most serious student.I froze for a beat, still half in shock. My fingers scrambled over my top, fixing it, pulling it straight, making sure nothing looked out of place. My cheeks were on fire. My whole body was buzzing, but I forced myself to grab my notes, lay back against the couch, and pretend I had been reading the whole time.I pressed my pen to the paper, hand shaking so badly I could barely write my own name. I swallowed hard and prayed my dad or his mom wouldn’t come down the stairs.For a long moment, the house was dead quiet. Just the ticking of the wall clo

Chapter 44: Jealousy

SiennaKendra leaned forward from the backseat, her voice bubbling with excitement. “So? The lake house party—don’t tell me you two still haven’t locked it down.”I twisted in my seat to stare at her. “Wait—how do you even know about that?”She raised her brows like I’d asked the dumbest question in the world. “Uh, because everyone knows? Half the school’s buzzing already.”I whipped my head toward Jaxon. He glanced at me just as shocked, his hands tightening on the steering wheel.“Half the school?” I repeated, voice pitching higher than I meant.Kendra grinned wickedly. “Yep. Guess the secret’s out. You guys might want to speed things up before people start making their own invitations.”Jaxon muttered under his breath, “Great. Just what I needed.”I bit back a laugh, shaking my head. “This was supposed to be quiet.”“Please,” Kendra said, waving me off. “Nothing stays quiet around here. Anyway, I expect updates. Don’t leave me hanging.”“Fine,” I sighed dramatically. “I’ll carry yo

Chapter 45: Behind Closed Doors

SiennaThe air between us snapped like a live wire. Jaxon’s mouth moved against mine with a hunger that made my whole body tremble, my hands clawing at his shirt before I even realized what I was doing.Somewhere between kisses, clothes started tumbling to the floor—his hoodie, my cardigan, his t-shirt. We didn’t stop to think. We didn’t even breathe. It was like the whole week of holding back had erupted in one unstoppable wave.“I missed you too,” I whispered against his lips, the words breaking out before I could hold them in. And I meant it—God, I meant it with everything in me.His hands slid over my waist, pulling me closer, and my heart thundered so loud I swore he could hear it. By the time I realized how far we’d gone, we were both stripped down to nothing but our underwear, tangled against the wall.That was when reality slammed into me.“Wait,” I gasped, pressing a hand to his chest. My face burned hot, half from breathlessness, half from what I was about to say.He pulled

Chapter 46: After glow

SiennaThe room smelled like sweat and heat, the sheets a mess around us. My chest still rose and fell too fast, my skin damp, my body sore in the best way. Jaxon was lying half on me, half on the pillow, his arm draped over my stomach, his fingers lazily tracing circles there.I let out a small laugh, the kind that came from exhaustion mixed with happiness. “You’re heavy,” I whispered, pushing at his shoulder.He chuckled against my neck, not moving. “Deal with it. You’re stuck with me now.”I rolled my eyes, but a smile tugged at my lips. He finally shifted, turning onto his side so we were face-to-face. His hair was damp, messy, his lips pink and swollen from all the kissing. I bit my bottom lip just looking at him.“You’re staring,” he teased softly.“You’re ugly,” I shot back, even though I couldn’t stop smiling.He laughed quietly, brushing a strand of hair from my face. Then his hand lingered on my cheek, thumb stroking gently. The way he looked at me right then made my chest a

Chapter 47 :The Prom Question

SiennaThe fork in my hand suddenly felt too heavy. Mom’s words hung in the air like a stone dropped into still water.“So… what about prom? Have you thought about your dates yet?”I swallowed, hard, my mind racing. I could feel Jaxon’s stare burning into me, both of us fumbling for a reply but neither daring to speak first.Dad leaned forward, eyebrows raised in curiosity. “Well? You two must’ve thought about it by now. Don’t tell me nobody’s asked either of you.”I forced a laugh, my voice thinner than I wanted. “It’s… um… it’s complicated.”Jaxon shifted in his seat, clearing his throat like he was about to buy me time. But Mom didn’t give us much of a pause. She tilted her head, her smile playful but sharp enough to feel like a spotlight.“Complicated?” she echoed. “Come on, Sienna. You’re a pretty girl. Don’t tell me you don’t have a line of boys waiting.”I blushed hard, staring down at my plate. My voice came out smaller this time. “It’s not really like that.”Dad chuckled, tur

Chapter 48: Before Prom Night ( Promise in the dark)

SiennaMom’s eyes stayed on us a little longer, waiting for an answer. Dad leaned back with a knowing grin, like he was enjoying watching us squirm.Jaxon finally broke the silence with a chuckle. “Alright, alright. If we find dates, we’ll take them. Deal?”I nodded quickly, my smile tight but playful. “Yeah, no pressure. If we find, we’ll go.”Mom clapped her hands once, satisfied. “Good. That’s all we ask. Prom is once in a lifetime, after all.”Dad stretched and stood, giving Mom’s shoulder a squeeze. “Alright, let’s call it a night. Big day tomorrow.”The living room broke apart with yawns and light chatter. Dad kissed Mom’s forehead before heading upstairs. Mom ruffled Jaxon’s hair on her way out, and I couldn’t help but laugh when he groaned like a little kid.Within minutes, the house grew quiet. Bedroom doors closed, footsteps faded, and the hum of the TV finally died out.I climbed into bed, my phone still warm in my hand. Notifications from the group chat popped up, but my e

Chapter 49: The Countdown

SiennaThe school was alive that Friday like it had been waiting all year for this single day. Streamers, balloons, and banners were strung up in the halls, some already crooked from students tugging at them on their way to class. The air smelled faintly of markers, tape, and the hairspray girls had sprayed on themselves before first period. Everywhere I looked, it was prom, prom, prom.Campaign posters for Prom King and Queen littered the walls, taped over lockers and bulletin boards. Some were flashy, with glitter and pictures, others just sharpie-scrawled slogans. Every time a bell rang, someone new shoved flyers into your hands, chanting promises about free candy if you voted for them.And then, there was the other kind of “advertising.” A few seniors—bold or just stupid—moved through the hallway selling little “prom packs” out of their backpacks: boxes of condoms, mini bottles of baby oil, even perfume samples swiped from their sisters’ dressers. Giggles and whispers followed the

Chapter 50 : Prom Night

SiennaThe school didn’t look like the school anymore. By the time the sun dipped and the first cars began to roll up, the parking lot was alive—buzzing with music, chatter, headlights flashing across sequined dresses and polished shoes. A red carpet had been laid out at the entrance, lined with balloons that glowed under string lights, and students poured in, some arriving in limos, others in flashy rentals, a few even pulling up on motorcycles just to show off.The bass of the music shook from inside the gym, leaking out through the double doors. Laughter, shouts, the click of heels on pavement—it was chaos in its most colorful form.Jaxon and I didn’t make a scene. He pulled up in his car, clean and simple, the windows down just enough to let the cool night air in. We weren’t here to give people something to talk about, not yet. The less attention, the better. Still, the way people turned their heads as we walked up—me in my dress, him in his suit—sent a ripple of whispers behind u

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