Possessive Step Brother Romance Books

Trigger warning!!! Intended for mature readers who enjoy morally complex, slow-burn, possessive, forbidden, dark romance that pushes boundaries. ***EXCERPT*** Blood everywhere. Trembling hands. "No!" My eyes blurred. His lifeless eyes stared back at me, his blood pooling at my feet. The man I loved—dead. Killed by the one person I could never escape - my stepbrother. *** Kasmine's life was never hers to begin with. Kester, her stepbrother, controlled and monitored her every move. At first, it was all sweet and brotherly until it began to turn into an obsession. Kester was the Alpha, and his word was law. No close friends. No boyfriends. No freedom. The only consolation Kasmine had was her twenty-first birthday, which was supposed to change everything. She dreamt of finding her mate, escaping the sickening control of Kester, and finally claiming her own life. But fate had other plans for her. On the night of her birthday, not only was she disappointed that she wasn't mated to the love of her life, but she found out that her mate was none other than him - Her tormentor. Her stepbrother. She'd rather die than be mated to a man whom she had known as her big brother all her life. A man who would do just anything to make sure she was his. But when love turns to obsession, and obsession turns to blood, how far can one girl run before she realizes there is nowhere else to run to?

Warning: This story contains strong language, explicit adult content, and mature themes. Reader discretion is advised. I loved Derek Savage for six years, believing he’d be my mate someday. But when one reckless debt threatens his life, it leaves me no choice but to beg his older brother, Reign, for help. Reign’s deal is simple: he’ll pay Derek’s debt. In exchange, I become his. For six months, I belong to the one man I should never want, my future stepbrother, my Alpha, my forbidden craving. And the worst part? Every time he touches me, I stop caring about right and wrong.

"We shouldn't be doing this" said a broken whisper filled with desire… * Finding a way to escape her tortured family, Rayla thought that her prayers were soon answered as the moon goddess finally paired her with a mate. All seemed pleased except for her stepbrother who has made it his life mission to bully her. She is usually unbothered by him until one night when he came into her room with broken knuckles, causing her to begin to see him in a different light. Her dreamy bubble gets busted however when her mate suddenly rejects her in front of the whole school the following day, with no explanation whatsoever, …And her life takes an even bigger turn when stepbrother claims her in front of the whole school as his mate. Their relationship is forbidden and tagged as an abomination. And he knows this, but he just doesn’t care!

When I turned 18, my mother married my stepfather, a retired mafia kingpin, and I moved with her into a luxurious mansion. Just when I thought my life was heading toward happiness, my stepbrother, the new mafia boss, stormed into my life. He was like a devil, with delicate eyebrows, a high, sharp nose, and lips that were always tightly pressed together beneath a cold expression. Every time our eyes met, I felt a chill run through me, making it hard to breathe. I tried my best to avoid him, but he had no intention of letting me go. “My stepsister, from the moment I first saw you, I knew I couldn’t let you go. You can’t escape—you’re destined to be mine.” I stared into his possessive eyes as his body pressed down on mine. “No, you're my stepbrother, we can't……"

"Who did you piss off this time, Princess?" "You." Kian Lawley smiled. "Good. I'd hate to think you were obsessed with someone else." *******************:* Getting framed by the most powerful boy in college was bad enough. Finding out he was about to become my stepbrother was worse. Kian Lawley is arrogant, cruel, and impossible to avoid. He makes me question everything I know about him... and everything I know about my own family. Because the deeper I fall for my bully stepbrother, the more secrets begin to surface. Secrets someone is willing to kill to protect. And when the truth finally comes out... Will Kian be the one who protects my heart... ...or the one who gets me killed?

I called the wrong name in the dark… and woke up bound to the wrong man. What was meant to fix my broken marriage became a mistake I can’t undo—one that marked me with a bond I don’t understand… and can’t escape. Now he hears my thoughts. Feels my fear. And knows exactly how to use it against me. Killian isn’t just my mate. He’s my stepbrother—an Alpha with power, secrets, and a reason to keep me close. I should hate him. I should run. But the bond won’t let me. And now… he’s come to take me back.