Erotic Brother Sister Stories

Olivia had never thought she'd see Aiden other than her sister's best friend who is constantly a thorn in her shoes, but after they accidentally made out, things changed between them. Aiden is that one man she should not want. He's forbidden. Off Limits. A certified man whore who doesn't do relationship. And what's worse? Her sister's best friend.

I caught him red handed with his tongue in his mistress’ mouth on the night we were told I could never give birth. He humiliated me and made me a laughing stock. To spite him, I had a one-night stand with a handsome stranger who was the hotter version of him. On the night our pack is almost burnt down to shreds, my husband is asked to pick one person to save, and he picks her! His mistress! Condemning me to death even after everything I did for him! That is when he erupts from the shadows. HIM, the man who dared to go against the army of the great Redmoon, and the man I had a one-night stand with. “You disappoint me, brother. Father would turn in his grave for your cowardice.” He says to my husband. He is my husband’s brother, an illegitimate son of the late alpha king. He has returned out of spite for his father to possess everything the royal family has ever owned; and that includes me. He is the definition of evil and cruel, but immorality has never looked or tasted so good.

“Dominick?” Charlie shouted my name in public. But I simply ignored him. “I like you! Please, say it back!” he added. Still, I ignored him and continued walking without looking back. I couldn’t turn my head from side to side when the scandal had already caught everyone’s attention. “Are you deaf? I like you!” he insisted, this time, his voice even louder compared to earlier. “I know you like me, too. So, please, come back!” Dominick and Clarissa were getting married the next day. However, at the bachelor’s party, Dominick Roy de Guzman accidentally had a one-night stand with Charlie Frost, Clarissa’s older brother.

After one devastating breakup, Summer Peterson—quirky, invisible, heartbroken—finds herself tangled in secrets she can’t outrun… in the arms of her best friend’s brother. A forbidden affair. A hidden betrayal. A truth that could destroy them both. Summer always knew loving Hayden was dangerous. He’s reckless. Magnetic. Off-limits. But secrets taste sweeter when they’re forbidden. And Hayden doesn’t just touch. He owns. He ruins. He leaves marks that never fade. One kiss was a mistake. The second was a promise. Now every stolen moment drags her deeper into a web of obsession she doesn’t want to escape. Loving him could cost her everything. Leaving him might cost her more. Some secrets should stay buried. Some kisses never let go. How do you run from the boy who’d burn the world to keep you? And how far will she go for a love that was never meant to save her? ⚠️ TRIGGER WARNING – MATURE CONTENT AHEAD This story doesn’t hold back. It dives deep into explicit sexual content, intense emotional trauma, abuse, violence, and psychological manipulation. This content is strictly for 18+ audiences. If you proceed, do so with your eyes wide open. You’ve been warned.

Lyra Bennet made a mistake… After years of a committed relationship to her boyfriend Levi, Lyra plans to give him the only thing she has always held from him: Her Innocence. Yet the night doesn’t go exactly as planned, and she ends up sleeping with someone else instead, Her boyfriend’s brother. Lyra has betrayed Levi in the worst way possible. She loves him, she really does. But even love isn’t enough to prepare her for what comes next. Lyra finds out she’s not the one who’s cheated on their relationship. Levi has also been busy, but while she felt guilt for betraying him, Levi has been lying right to her face - the same way he’s been doing for months now while he betrayed all that was ever between them. With the pain and hurt running through her, Lyra decides she won’t be the fool he cheats on and calls “babe” right after he’s fucked her bestfriend. No. To get back at her boyfriend, Lyra becomes determined to chase his brother Christian Storm and become his sister-in-law. But Christian Storm is much more than just a man…. He’s a force to be reckoned with. While Lyra plans to simply use Christian for revenge, she realizes something as she tries to use him. Lyra realises there can be no other man for her except him. Her heart has been captured, by a man she might never be able to have…. Because not only is he miles out of her league… Christian also has a fiancée.

Fiona takes on the identity of her twin sister, Fey when she goes missing. One month ago, Fey tells her, that her newly wedded husband, Alpha Cult is hiding something. This is the last time Fiona heard from her sister. Hence, Fiona is out to find Fey even it means pretending to be her, the Luna of the Sovereign Pack and wife to the Alpha. He is supposed to be her first suspect. She is not supposed to want his mouth in between her legs. It is supposed to be forbidden but Fiona wants to break this one law. She doesn't know how dangerous Alpha Cult can be especially when he is not just a wolf. A part lion and A part wolf. A creature that is born once in a thousand centuries.

My heart stops. For a moment, everything around me falls away. The people, the noise, the ballroom—all of it disappears as I stare at him. My chest feels tight, like I can’t breathe, and my mind goes blank. It’s him. The man who kissed me, who left me reeling with emotions I didn’t even understand… is Lilly’s fiancé. … After watching the brutal death of her father in the Vanderwilson pack at the age of 10, Agatha’s life has been nothing but a nightmare. Lycanless and powerless, she’s trapped in a world where strength is everything—and she has none. Her stepfather Nick’s abuse keeps her in the shadows, and her once-loving family now feels like a distant memory. But when her sister Lilly announces her engagement to the new Alpha of the Vanderwilson pack, Agatha is forced back into the world she was rejected from. At Lilly’s lavish engagement party, Agatha crosses paths with a mysterious man in the garden—an encounter that stirs a deep, forbidden connection within her. But when she learns that the man is none other than Lilly’s fiancé, her world shatters. Agatha’s heart is torn between a burning attraction and her loyalty to her sister. With secrets lurking beneath the surface—ones that could destroy her world —Agatha must decide whether to follow her heart or protect the ones she loves. In a world ruled by Lycans, what happens when the real danger comes from within? Betrayal, forbidden love, and dark secrets collide in My mate is my brother-in-law and the alpha —a heart-pounding, emotional rollercoaster you won’t be able to put down

His fingers traced down my side, slow and teasing, until he reached my thigh, he gripped it hard and lifted it higher around his waist, the change in angle had me gasping as I felt the hard nudge of his very hard and well sized shaft. “You’re sensitive,” he murmured, his voice thick with satisfaction. I wanted to give a reply, show him I was still in control but damn it, he moved and he pushed that little monster inside me with deliberate, frustrating slowness and it was like the room tilted. “Oh my…” —------------------- The day Emilia lost everything, she met a mysterious man who she ended up having a passionate night with, but it only left her longing for more. Little did she know, her forced wedding was about to bring them together again. But this time, as brother-in-law and sister-in-law. Torn between duty and desire, Emilia must decide: resist the attraction or give in to her heart's desire.

Hadden's sister had merely choked on some water at the pool while she was swimming, and for that, he shoved me into the pool after tying me up. He left me with only a small hole for air that was barely an inch. He said I would have to pay double for every grievance Julia suffered. I never learned how to swim. There was nothing I could do but try my best to breathe as I sobbed and begged him to let me out. Yet all I received was a lecture. "You'll never learn if I don't teach you a lesson now." I struggled to stay afloat, but… It took five days before Hadden's anger dissipated and he put me out of my misery, but it was already too late. "I'll let you go this time, but you'd better not make the same mistake again!" I had already drowned to death.

Born to an Alpha hungry for power, presumed powerless Sasha has lived a life void of compassion and love but filled with loneliness and insults all because she wasn’t a boy. Looking to solidify his position of power, her father believed she was good for one thing, so he offers her hand in marriage to the most ruthless Alpha in the northern region, Turk. Unwilling to suffer at the hands of yet another power hungry man, Sasha runs away only to end up captured, believed to be human, and sold as a slave. The only thing…she’s sold to the same Alpha she ran away to avoid. Struck by her beauty and defiance, Turk decides he wants to make her his little Luna, except for one thing….on the day he introduces Sasha as his Luna she realizes his brother and Beta is her mate... The True Alpha of the Tumbale Pack, Bello was never interested in power. His focus has always been on being the best artist he could be and ensuring his pack prospered in other ways. Mateless and uninterested in taking a chosen mate, Bello happily concedes the Alpha position to his older brother, Turk, and accepts the position of Beta, after the untimely death of their father. After returning from a trip on pack business, Bello encounters the most glorious scent, one that could only come from a mate, at a pack dinner he’s forced to attend. The problem, the scent is coming from the human his brother has just introduced as his Luna. What happens when Bello meets Sasha? Will Bello fight for Sasha? Will Sasha accept him as her mate? Will Turk let her go? What is a human doing among wolves?