Are There Any Sister Brother Books Like 'The Light Between Oceans'?

James Anderson lost his future mate and luna, Stephanie, during a rogue attack. Stephanie's death left his entire pack in mourning; her death anniversary was even declared a pack holiday. Five years later, James discovers that Stephanie's younger sister Lily is his mate. But how can that be? Wasn't Stephanie supposed to be his mate? And would his pack even accept Lily as his mate and Luna—many have always blamed Lily for Stephanie's death, because Stephanie died trying to save Lily. For her part, Lily has lived in the shadow of her beautiful older sister for years. She knows very well that pack members and her parents wish that it was Lily that died that day instead of Stephanie. Lily had looked forward to the day that she would meet her mate and finally feel important to someone. Discovering that her mate is James is Lily's worst nightmare, especially when James reacts poorly to the discovery. Lily decides that she is unwilling to live in Stephanie's shadow any longer. She will not spend the rest of her life with a mate who wishes she was someone else. She rejects James, who all too quickly accepts the rejection. Soon afterwards, horrifying truths come out and James immediately regrets letting Lily go. He sets out to get Lily back and right the wrongs that have been done. But is it too late? Will Lily find love with James, or with someone else?

Grace has a secret—one that could shatter her family. She is in love with Hunter, her sister Helena’s husband, and the guilt is suffocating. So when their mother and Helena ask her to be Helena’s surrogate, Grace agrees, hoping this sacrifice will atone for her forbidden feelings. But carrying their baby might be the very thing that destroys her. If she is pregnant, once the baby is born, she knows she must leave—escape the torment of watching the man she loves build a life with someone else. But before she even finds out if she’s carrying their child, tragedy strikes, leaving Grace to pick up the broken pieces of their family. As grief and secrets collide, she is forced to navigate a path where love, loyalty, and betrayal blur, leading her toward an impossible choice.

A typical teenage romance novel. Where the girl falls in love with the jock. But the only difference in this one is that the girl falls in love with her brother. "Why does what I do matter so much to you?" I asked curiously. He slammed his hand against the car behind me as he caged me in. He looked down at me with a scowl on his face, his tall frame hovering over me. "Because I care about you." He said loudly and his minty breath hit my nostrils causing me to gulp. I've never been this close to him before. Since the first day that he met her, he was attracted to her. But he had to keep his feelings a secret, for the sake of their family. She can't fall in love with him. So he needs to show her the worst parts of himself, because maybe then she'll hate him. BOOKS 1 & 2.

“How was I supposed to explain to you that you are my mate? How was I supposed to explain to the world that you, my sister, was my mate? Tell me,” Alexandra demanded, getting riled up again. *********** Alexis was anxiously preparing for her 18th birthday in hopes that her long-time crush would be her fated mate. However, her hopes are dashed when her crush isn't her mate and her brother, Alexandra, returns after years. Alexis discovers her brother is her fated mate. The entire family is thrown into confusion, dark secrets about their parent's past and the truth about their parentage. Alexandra must protect Alexis from the evil plans of their parents, who will stop at nothing to secure their power. Will they succeed in bringing justice to their pack? Will the weight of their family's secrets tear them apart?

Elara Valr has always known independence. Growing up, she navigated life on her own terms, confident, clever, and unafraid to challenge anyone in her way, including her protective older brother, Elias, whom she loves fiercely. Now, in her third year of college, she’s focused on her studies, her ambitions, and the life she’s building for herself, until Adrian Moore arrives. Adrian is new to campus, young, confident, and devastatingly handsome; a professor in his first real position, full of authority and restraint. There’s something magnetic about him, something that draws Elara in from the moment she sees him. What begins as casual conversations and professional exchanges quickly turns into a private, heated, and irresistible connection. one that neither can ignore nor fully understand. Adrian harbors a secret of his own: a twin he never knew existed, a brother he’s desperate to find. When he discovers the truth about his twin’s connection to Elara’s life, everything shifts. Loyalty, trust, and desire collide in ways that neither of them expected. Elara must confront the dangerous pull she feels toward a man who mirrors the brother she grew up with, while Adrian struggles with the boundaries of love, identity, and family. As their passion deepens, the stakes rise. Every choice carries consequences, and every secret threatens to unravel the delicate balance they’ve built. Love and desire are intoxicating, but in a world of mirrors and hidden truths, the cost of giving in may be more than anyone can bear. This is a story of forbidden desire, obsession, and emotional tension, where hearts collide, secrets explode, and the line between love and guilt becomes dangerously thin.

After leaving Seattle, Ella seeks refuge in a small Alaskan town with her dysfunctional mother and perverted stepfather. But her hopes for a quiet, peaceful life are shattered when she collides with Tristan and Nathan, identical twin brothers who are as captivating as they are troublesome. As Ella tries to resist their charms and focus on her new life, she must also contend with the toxic relationships and dark secrets that have haunted her for so long. Will she find a way to heal and start anew, or will the shadows of her past forever define her?