Sister Boyfriend Novels & Stories

Kevin, the elite bodyguard I'd spent ten years training, chose my adopted sister, Eva, over me when it came down to life and death. So I went straight to an underground fight club and picked out the craziest, most ruthless bastard I could find. A month later, Kevin got word and came rushing back, dragging his battered body past the guards at my door, fighting within an inch of his life. He knelt on the floor, eyes bloodshot, clutching the hem of my dress. "Principessa, what does that scarred stray have that I don't?"

Today is the day when my boyfriend Caleb agreed to mark me. I even took off my skirt, but he received a phone call before he could complete it. He instantly left me alone on the bed, making me feel extremely embarrassed. I tried everything to contact him, but I couldn't reach him. Then, when I finally called his childhood sweetheart, Susan, to my surprise, Caleb answered the phone. "Susan was scared by a nightmare. I have to stay with her to take care of her. Let's mark another day. And please can we talk later. Susan finally fell asleep again. I don't wanna disturb her rest.” "But this is the seventh time you have postponed marking," I said softly. "Marking can be done at any time, but Susan needs me! Don't you have any humanity, Maria?" He hung up, and I burst into tears. My inner wolf asked me, Caleb is gone, do you still need to mark today? I wiped away my tears and said, "Of course, I will do it.” And I immediately contacted the alpha of the neighboring tribe.

She coveted everything about me. My possessions, my experiences, and even my men. So one night, my mother pushed me into an older man's bedroom. The next day, she asked with a smug smile, "Nina, how was your night with the older guy?" I rubbed my sore waist, recalling his broad shoulders, long legs, and trim waist from the night before. I smiled as I answered her. "That fiancé of mine is all yours now. Just remember—I’ll be your Aunt-in-law in the future.”

I picked up a system with my sister. The system said only one of us could bind to it, and the other could take twenty million dollars. My sister shoved me aside and chose the money. Ten years later, she squandered everything and ended up homeless. Relying on the luck the system gave me, I excelled in my studies, climbed the career ladder, and reached the peak of my life. Driven by jealousy, my sister stabbed me to death at my birthday party. When I opened my eyes again, I was back to the day we found the system. This time, she said without hesitation, “Luck is too intangible. I’ll take the loss. You can have the fortune.” I knew she had been reborn, too. What she didn’t know was that the luck granted by the system always came at the cost of one’s lifespan.

Cassia was only a child when she lost everything. Trying to save her mate, Talon, from a rogue attack left her without a wolf—and without love. He rejected her in front of everyone, chose her sister, and even accused her of trying to poison him. Hurt and angry, Cassia is filled with nothing but a need for revenge. One night, she meets a powerful stranger at a club and ends up having a one-night stand. What she doesn’t know is—he’s Alpha Magnus, Talon’s stepfather. He’s feared by many and known for his cold heart, but when Cassia comes to him for help, he sees a chance to get back at his stepson. He offers her a fake marriage. She agrees—thinking she can use him as a weapon to destroy Talon. But what starts as a plan turns into something much deeper. Cassia and Magnus begin to fall for each other. They try to fight it, but their feelings keep growing. Cassia hides a secret: her wolf is back, and she’s stronger than ever. But Magnus also hides something that could destroy everything between them. Just when things start to change, Talon returns—bringing secrets that shake Cassia’s world again. Now, she must choose: trust the man she’s falling for or let her past pain destroy everything. This is a story of love, betrayal, revenge—and the strength to start over.

She has always lived in the shadow of her perfect, caring sister until one night changes everything. At her sister’s engagement party, what should have been a normal, graceful evening turns into something she can’t fully understand. A blurred vision. A stranger. A mistake she wishes she could forget. But the truth refuses to stay hidden. The man from that night is her sister’s fiancé. Now trapped in a secret that could destroy everything, she’s forced to question what really happened and why it feels like more than just an accident. As memories slowly return, one thing becomes clear—this was no ordinary mistake. And the deeper she digs, the more dangerous the truth becomes.

On the day of our bonding ceremony, my blood bound, Alaric, took the eternal vows with his true love right before my eyes—his true love, who had only a few years left to live. He leaned closer to her ear and whispered, “I arranged a wolf attack on Elara so that she couldn't arrive at the ceremony on time, and I’ll take the Eternal Vows with you first.” “By our Clan’s law, since I took the vows with you first, you are my legal wedlock, whereas Elara is just a mistress.” He added. Everyone cheered and blessed them as he pulled her in his arms and kissed her passionately. I witnessed all of this, but I didn't cry or kick up a fuss. I've loved Alaric for decades, but I still couldn’t compare to Celeste, a half-blood vampire, created by my father. If that's the case, I'll let him go. Later, I joined the mortal world far away from our Clan. All that I left behind was a miscarriage report with my baby’s DNA , who couldn’t survive the wolf attack they had planned for me. Alaric had never cared for me, so it's odd that he would lose his mind over the loss of a child I bore for him.

On Christmas night, I've roasted a whole turkey and paired it with the finest red wine. Then, I quietly wait for my boyfriend, Don Carlo Carlione from the Carlione family, to come home to me. When Carlo steps through the front door, he doesn't even spare me a glance. Instead, he throws his blood-stained coat onto the couch and starts undoing his cufflinks. "Something important is going on at the family HQ tonight, so I can't celebrate Christmas with you tonight." He sounds very casual, as though he's talking about the weather. I don't respond to him at all. Instead, I just slice my turkey quietly. Later on at 1:00 am, Carlo's ex-girlfriend, Lucia Caruso, uploads a social media post right on time. In the photo, she can be seen resting her head against Carlo's shoulder. The background shows a night sky filled with fireworks overcasting a grand bridge. The caption reads, "He told me he can always keep me company as long as I say the word." I don't hurl my phone in a fit of anger, nor do I call Carlo to demand for answers hysterically. Instead, I just leave a like on the post. 30 seconds later, Carlo calls me. For once, his voice is tinged with a hint of alarm. "This is just a misunderstanding! I'll definitely celebrate next Christmas with you!" I just shake my head with a soft sigh. "It's a shame that there's no next Christmas for us ever again."

Two months ago, I was accidentally injured by a killer who came to assassinate my husband at home. I didn't expect there to be black magic curses on the silver dagger. On the night when my curse took effect, My partner—Alpha Alexander is celebrating his sister's birthday, his true love. When I tried to establish a spiritual connection with him,I have lost my wolf. When Emma called her father for help,He sneered coldly, his voice indifferent. "Isabella, using such a small child, are you worthy of being Luna?" "You are a little liar born of your mother, let her die if she wants to, don't bother me." He doesn't know that I'm really about to die.

Three months, she was supposed to live with her sister's family for three months but how will she survive living in the same house with him when she harbors those nasty thoughts? How will she survive living in the same space with him when he was the reason she left for Paris three years ago? How will she hide the love and lust she has for her sister's husband?