All Chapters of Sinful Obsession: My Billionaire Stepbrother : Chapter 11 - Chapter 20

113 Chapters

Too proud to Apologise

~Isabel~ After I finished the bowl of hot soup, I must have crashed completely. When I woke up, my fever had finally dropped, but I felt weak and shaky like a limp piece of toast. Every time I tried to sleep, I just kept seeing the red taillights of William’s car leaving me behind in the fog. I wanted to stay mad. I was mad. But an annoying voice in the back of my head kept whispering, You’re living in a billionaire’s house, Isabel. You’re eating his food and sleeping on his silk sheets. What did you expect? I reached for a chocolate from the box on my nightstand. Someone must have brought them in while I was out cold. I took a piece and let it melt. It tasted ridiculously good. I felt a little guilty for enjoying it, but my stomach didn't care about my pride right now. I was halfway through the box when I heard a sound at the door. It wasn’t my mom’s soft knock. It was three quick, sharp raps. "I’m awake," I said, my voice sounding scratchy and thin. The door open

Flirty Server

~Isabel~ Outside, the morning air was crisp and smelled like damp earth. A matte-black SUV sat idling in the driveway, its engine making a low grounding sound that vibrates right through the soles of my sandals. William didn't even bother to open the door for me, he just hopped into the driver’s seat, leaving me to pull open the heavy passenger-side door myself. I climbed in, and the scent of his cologne—something like cold breeze—filled the whole car. It was kind of overwhelming but also really good. We pulled out of the estate in total silence. I stared out the window at the blurred London streets, my reflection in the glass looking way more confident than I actually felt. Those jeans were definitely doing their job, but the way William was gripping the steering wheel, his knuckles white and his eyes fixed strictly on the road, made me wonder if I’d pushed things a little too far. "I’m not a fan of the silent treatment, William. If you’re still mad that I survived

Different Worlds

~Isabel~ "Which university did you graduate from?" I asked as we drove. I kept my voice casual and looked at his profile. He had a sharp jawline with a hint of morning stubble. He didn't answer right away. Instead, a lazy smirk tugged at the corner of his mouth. He looked at me with a flash of genuine amusement, his whiskey-colored eyes twinkling with an unexpected mischief that made my stomach flip. "What’s funny?" I asked, frowning. I ran the question through my head, trying to see if I missed some joke. "Is it a secret? Did you go to school in a basement?" "Nothing." He tapped his fingers on the steering wheel, his expensive watch catching the morning sun. "I’m just thinking maybe you’re finally interested in me. Did the flirty waitress give you a wake-up call?" "Ha!" I gave out a dry laugh and leaned back against the headrest. "How could I be interested in you? It’s not even like that. You know you’re my brother." "Step-brother," he corrected instantly.

Faking Niceness

William stepped out of his car in his glory. The second his polished leather shoes hit the pavement, the entire campus seemed to freeze. It was like a vacuum had sucked all the oxygen out of the quad, leaving everyone breathless. "Is that… no way. Is that William Sterling?" The whisper rippled through a nearby group of girls, their mouths hanging open. "The billionaire? Why is he here? Who is the girl? Did he just drop her off? Look at her… she’s wearing a pink sweater. Is she his girlfriend?" I stood frozen on the stone steps, my fingers digging into the strap of my handbag until my knuckles turned white. I wanted the ground to open up and swallow me whole. I felt like a bug under a microscope. But William didn't look bothered at all. He looked like he was thriving in the spotlight. He smoothed the front of his suit jacket, the sunlight catching his expensive watch, making him look like he had stepped straight off a billboard. Then, he did something that made my

Meeting Chloe

~Isabel~ I realized then that these girls were exactly like William: rich, arrogant, and convinced the world belonged to them just because of their parents' bank accounts. But I was done being pushed around. "I'm here to study law," I said, keeping my voice steady as I looked the leader dead in the eye. "Not to join your fan club. If you're so obsessed with William, go find his car. I'm sure he’d love to ignore you as much as he ignores everyone else.” The girl’s face turned a nasty shade of red. She looked like she was about to explode, but before she could snap back, the lights in the hall dimmed. The Dean stepped onto the stage, his silhouette sharp against the bright podium. "Take your seats, everyone," the Dean’s voice boomed through the speakers, echoing off the high ceiling. The four girls gave me one last hateful look before sliding into the row behind me. Even as the room went quiet for the speech, I could hear them whispering—sharp, stinging words meant for me

Opening Wounds

~Isabel~ My life had basically become a survival game. Between back-to-back lectures and a mountain of textbooks to study, I barely had time to breathe. I hadn't even thought about my internship at Sterling Global. I’d been dodging the office for weeks, and every time I saw my blazer in the closet, I felt guilty and stressed. I was drowning in schoolwork, but Chloe was my only bright spot. We were inseparable and bonded over snacks and how much we hated our Torts professor. Her parents owned a massive bakery, and even though they were rich, Chloe was down-to-earth. She was grounded, unlike me. I was like a live wire about to snap. One night, I was slumped over my desk with my head on a textbook when my door opened. My mom walked in, smelling like expensive perfume and wearing a pretty red lace dress from her latest trip. She sat on the edge of my bed. "Isabel? You look beyond exhausted, honey," she said. "I’m just studying, Mom," I mumbled into the pages. "I’ve bee

Breaking Point

~Isabel~ I stood outside William’s study doors waiting a bit to gather myself. My face felt tight from crying, and my heart was still thumping from the blowout with my mom. I didn't have the energy for politeness, so I just pushed the door open. The study was dark, just one desk lamp lit up his face. He sat behind the desk, he didn’t look up immediately, just kept flipping through a file, his pen scratching against paper as he wrote. "You've been scarce, and you're minutes late," he said in a dark quiet voice. "I don't remember giving you permission to ignore me just because its not work hours." "It’s eleven o'clock, William. Besides, I came immediately after Mrs. Higgins informed me," I said truthfully. "What’s so urgent that it couldn't wait for the morning?" Finally, he looked up. He stood up slowly and walked around the desk until he was right in front of me, for some seconds he just stared as if looking for something on my face. I tried to look away, but he re

The Need Beneath all the Anger

~Isabel~ Instead of the explosion I expected, William just stood there. He slowly brought his hand up to his face, his fingers tracing the red mark where my palm hit him. A smirk tugged at the corner of his mouth, but his eyes stayed calm. The silence made my ears ring. My anger vanished, and looking at the mark on his face, I felt a wave of guilt. I had gone way too far. "William," I said, my voice shaking. I moved forward, my fingers touched his cheek. I wanted to take it back, but it was too late. I stared into his eyes, trying to figure out what he was thinking. For a second, his mask slipped, and I saw a flicker of real pain and indecision in his eyes at that moment. I had actually wanted to talk to him tonight about moving my internship to the corporate law department so I could use what I was learning in my classes. But how could he listen to me now? I’d just slapped the guy who held my entire career in his hands. "I... I'm sorry," I said. "You pushed me, Wi

Losing the Fight ( William's POV )

~William's Pov~ I stood in the center of my study long after the door clicked shut. The house was completely quiet. I brought my hand up to my face and traced the burning mark where Isabel had slapped me. I let out a dry, bitter laugh. I was losing. I was seriously losing the war between my head and my body, and it felt like a punch to the gut. My mind was built on logic and specific rules, and I was supposed to hate her. I hated her mother even more for swooping in to take my late mother’s place. Sarah was just a gold digger who managed to charm my father into marriage less than a year after the funeral. It didn't matter that my parents had been separated for two years before she passed away; the wound was still raw. Having those two women arrive felt like pouring salt into a deep cut. But my body was being a total traitor. It didn't care about the family legacy or the fact that she was technically my step-sister. From the very first moment my father introduced

Just My Step Sister

~William~I had spent the better part of the night staring at the ceiling, my lips still burning from a kiss that should have never happened. Every time I closed my eyes, I saw those chocolate-colored irises challenging me.By the afternoon, I needed to drown out the noise in my head. I hit the private gym at the athletic club, pushing myself through a brutal set of squats. The burn in my muscles was the only thing that felt real.My gym friend, Alex, was leaning against a weight rack nearby, scrolling through his own phone between sets. We had known each other for a long time now and we are close and he's one of the few people who didn't care about my last name, which was probably why I tolerated his constant talking.Ping.The sound of a text notification cut through the heavy beat of the gym’s music. My phone was sitting on the bench next to Alex."Yo, Will, you got a text," Alex called out, not looking up."Never mind it," I grunted, my teeth grit as I pushed the heavy barbell up

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