Step-sibling Romance Books

“You're my mate," Kyle whispered, his eyes flashing gold in the dim light. I stumbled backward. "That's impossible. We're about to be family." "I know. But the bond doesn't care about that." He's supposed to be her future stepbrother. In four weeks, their parents are moving in together, and Kyle will be family. Off-limits. Forbidden. The bond between them is instant. It's the kind of love that can't be ignored, can't be denied. When Kyle looks at her, Ella feels it in her bones, this is forever. This is fate. Except fate has never been crueler. How can they be together when being together means destroying their family? When every stolen glance across the dinner table is a secret they have to keep? When loving each other means breaking their parents' hearts? She has two mates. A Triad Bond. So rare, most wolves think it's just a myth. But it's real, and it's hers, and now Ella has an impossible choice to make. Kyle is her first bond, her strongest connection. Losing him could break them both. But loving him means hiding, lying, living in the shadows of their own family. Jason offers her something different. With him, there are no secrets. No forbidden touches. No family dinners where she has to pretend her heart doesn't belong to the boy sitting across from her. Jason can give her everything Kyle can't, a normal life, a real future, a love she doesn't have to hide. But choosing one mate means hurting the other. And the full moon is coming and time is running out. And Ella is about to learn that when you're bonded to two Alphas, love isn't about choosing the right person.

A game of spin the bottle wasn’t supposed to change my life. I wanted to get out of our small town, and the only way to do that was to get good grades. I didn't want to get distracted by anyone or anything, but I couldn't seem to ignore Liam. He was sexy, moody, and about to become my stepbrother. Exactly the kind of trouble I should have avoided. But I let my hair down for a party in the woods; a couple of girls and guys playing spin the bottle and truth or dare. Silly games shouldn't change your life but sometimes fate steps in. It's nearly graduation and I'm closing my eyes, thinking that I can't deal with having one surprise today, but two.

A sizzling collection of taboo love stories where step siblings cross the line between hate, heat, and heartache. Each tale explores forbidden desire, explosive chemistry, and the dangerous thrill of wanting what you should not have. From enemies to lovers to reverse harems, these stepbrother romances are anything but innocent.

I didn’t choose this life. I didn’t choose this house. And I definitely didn’t choose my stepbrother. When my mother marries the richest man in New York, I’m dragged into a world I heavily despise—a world of luxury, lies, and Lucian Castillo. He’s arrogant, rich, and cruel. He never misses a chance to remind me how much I don’t belong. We hate each other. Or at least, we’re supposed to. Because with every passing day, the hate only grows…along with an emotion I never thought I’d feel for him. I swore to hate my stepbrother. But caught between unforeseen passion, temptation and buried secrets, I’m no longer sure that’s possible.

Falling for her stepbrother was pure madness, and Simone knew it... Having him reciprocate is dream material though. A tender look here, a smile there, and she could delude herself into thinking he cared as well. But what if she's not so delusional after all? What next?

Seraphina Hardin’s life shatters when her mother marries into wealth, dragging her into a world of privilege, secrets, and betrayal. Forced to share a roof with Ian Hardin, her arrogant, dangerously charming new stepbrother, she vows to resist his cocky smirks and infuriating confidence. But when their fiery clashes ignite something far more intense, resisting him becomes impossible. Ian has always had the perfect life—or so it seems. Beneath his polished exterior lies a rebellious soul, haunted by expectations and family secrets. Seraphina’s arrival throws his world into chaos, challenging his control and awakening feelings he’s not prepared to face. Even though they are made to resist, they eventually have an affair. As forbidden tension simmers, lies unravel, and enemies circle closer, Seraphina and Ian are forced to confront their deepest fears, and their undeniable connection. But love isn’t easy when it’s forbidden, and the cost of giving in might be more than they can bear. Will their love survive betrayal, jealousy, and the weight of their pasts? Or will the world tear them apart before they have a chance to rewrite their story?