Best Books About Parallel Universes

She was supposed to heal him, not crave him. Olivia Carter, a divorced physical therapist, thought her new job with the Chicago Blizzard hockey team would be simple—treat injuries, keep her head down, and cheer for her son on the ice. But when the team’s arrogant and devastatingly handsome captain, Xander Hayes, lands in her care, everything spirals out of control. He’s engaged. He’s her son’s best friend. And he’s forbidden. What begins as teasing flirtation turns into stolen touches, midnight encounters, and a dangerous obsession neither of them can resist. But secrets never stay buried—especially in the world of fame, fortune, and ruthless tabloids. When their affair explodes into the public eye, Olivia risks not only her career and reputation, but the one bond she can’t afford to lose: her son’s trust. Will Xander choose his fiancée, his career, and his best friend… or the woman he should never want?

Riley thought her life was better the way it has been; a man to run to, a best friend whose shoulder she could cry on all the time. But everything came crashing when she found her best friend and her boyfriend on the bed, where she found out that her boyfriend had used her to get to Zelia, her best friend. Her world came crashing as they were the only ones that she had to call family.It wasn't intentional when she slept with her best friend's father that night; it was just a way she had considered to take things off her head. But what happens when Riley ends up pregnant, unsure of whom the father of her kids is.

My husband planned to sell my body to a stranger so that he could have a perfect reason to divorce me. When I heard his phone conversation, I didn’t wait for him to catch me, I hit the loudest club in town at once. Then something I didn’t expect happened. I slept with his forbidden best friend, a man who hated my guts like crazy yet he claimed me like I was his soulmate. His jaws tightened as he whispered “He didn’t deserve you. You were supposed to be mine.”

Mistakes? I’ve made plenty. The biggest one? Falling head over heels for Brian Lockwood—my brother’s best friend and the captain of the school’s basketball team. For years, I lived in the shadow of my one wish: for him to see me as more than just Simon’s little sister. But how could he, with Lyla, his perfect girlfriend, glued to his side? Then everything changed. Lyla cheated, Brian’s heart shattered, and he was desperate for a distraction. That’s when he came to me with a deal—a no-strings-attached arrangement where we could give each other exactly what we wanted. I saw my chance. I thought I could make him fall in love with me. But I didn’t account for how messy things could get—how keeping it all a secret from Simon would twist everything. And when Brian crossed a line I couldn’t forgive, I knew it was time to let go of my high school crush. Fast forward three years. I’m over him. Or so I tell myself. Except now Brian’s back, no longer the heartbroken boy I knew but a leading basketball star with one goal: to win me over. I swore I wouldn’t fall for him again.

When Mia hooks up with her brother’s best friend Ethan, their one-night stand ignites years of hidden love, risking family betrayal and heartbreak.

Avery Nash had two lives and one rule. Keep them completely separate. By day she was the captain of the Crestwood University cheer squad and a Business Management student holding onto her scholarship by her fingernails. By night she was Scarlett, masked and wigged and untouchable, dancing at Velvet Underground to cover the gap between what her scholarship paid and what her mother's deadbeat boyfriend kept taking from them. On the night her boyfriend cheated on her with her biggest rival, Avery made one reckless decision. She followed a brooding stranger back to his motel room and gave him the one thing she had been saving. Her virginity. "Take off the mask. I want to see you." He had said. "A little mystery never hurt anyone, did it?" she replied. She slipped out before dawn, telling herself she would never see him again. Then she rang her best friend, Jade's doorbell and he answered the door. Liam Harrington was Jade's new stepbrother, who she hated, the transfer quarterback every girl on campus was already talking about, and the boy sitting three seats away from her in every Business Management lecture. He was also the only person in the world who knew what Avery felt like without her armour on. He just did not know her real face. Now Avery was living three lives at once. The captain, the stripper, and the girl quietly falling for the one man she was absolutely forbidden to want. And the secret that started as one reckless birthday night was growing into something big enough to burn everything she had built.

“Shh, little girl,” he growled, teeth catching my bottom lip. I fought the moan, but he circled my clit, my hips jerked helplessly against his hand. Then he pushed my panties aside and sank two thick fingers inside me. I soaked his palm, knees buckling as tremors wracked me. “That’s it, cum for me,” he whispered against my ear. I did. Waves crashed through me while he held me up, stroking gently, murmuring filthy praise that made it sweeter, deeper, more shattering than anything I’d ever felt with a woman. I’m a lesbian. I’ve always known it, claimed it shamelessly. I’ve mapped women’s bodies with my mouth, hands, loving every touch and gasp. My best friend’s tongue between my legs has made me come countless times. The only man I tried, my ex, was awkward, unsatisfying. I swore off them forever. I love women. I love my best friend. So why does this man, her father, the one I should never want make me wetter with one stroke than she ever has? Why am I aching for his cock, pushed inside me, thrusting relentlessly, filling me, ruining me in ways no woman could? Why does bending over his desk for him feel like the right thing to do? One forbidden touch. One devastating truth: I might never want another woman again. When I rejected the vice chancellor's advances, my best friend's obsessive aunt, she threatened expulsion. My friend took me to her father, the college owner. One look at his body and I was lost. That night in their home, hiding in the kitchen while watching him cook, I touched myself, craving what is forbidden. Will my best friend discover my sudden addiction to her father? Will her aunt ever stop wanting me?

Leah lives with her mother and younger sister, carefully balancing school, work, and responsibility. Her father drifts in and out of her life, bringing nothing but chaos, guilt, and financial strain. Every interaction with him reminds Leah why control matters, why stability must be protected at all costs. Her secret begins with Damien Cross, her best friend’s father. Their connection forms quietly, deliberately, and with full awareness of the line they are crossing. Damien’s dominance awakens something in Leah; she has never allowed herself to explore a desire to surrender, to be guided, to belong. Their encounters are hidden and intense, leaving Leah shaken, fulfilled, and aching for more. Even as desire deepens, Leah understands the danger of discovery and the devastation it would bring. But passion comes at a price. Extra money, watchful eyes, and her father’s greed threaten exposure. One wrong move could destroy everything Leah fights to protect. Owned by My Best Friend’s Father is a dark, addictive romance about forbidden desire, alpha dominance, and the dangerous thrill of surrender. Some loves aren’t safe, but they’re impossible to resist.

When Corinne turned fifteen, she was sent to live with the Silver Stone pack… To learn how to be a wolf. Half human, half wolf, with no awakened wolf inside her. An outcast. Weak. Labeled “the hybrid”… But what no one knows is that she carries an Alpha aura she should never have had. Three years of bullying and silence, And three years of falling in love with the one man she was forbidden to want. Glacier… The Alpha of Silver Stone. Her father’s closest friend. A man whose heart was sealed shut by betrayal, who turned his back on the Moon Goddess forever. He swore no mate would ever threaten his control… Until Corinne’s scent began to change. As her eighteenth birthday draws near, A bond awakens. Impossible to deny. A hunger she was never meant to feel. Can a weak hybrid become an Alpha’s mate? And can an Alpha refuse fate… simply because she is his friend’s daughter? In a world ruled by laws, Love may be the one crime that is never forgiven.

~"Why is the best fruit always forbidden?"~ Alecander Blackford is that perfect Alpha blessed with the face of an angel but cursed with overbearing parents who would not stop tailing after his ass. After he runs away from the pack to stay at his aunt’s house, he did not expect that he would meet his mate who turned out to be more than he had expected and everything he was not. Soft, caring with a touch of defensive instincts, Elristeya Larsen is just that girl who has two parents that were in love since forever and a brother who would do anything to make her frustrated. When she meets her brother’s new best friend, it turned out to be the Asshole that had slammed the door in her face, Alec. She was undeniably captivated by his hypnotic orbs and the way he looked like everything a human was not. Like a different breed. Alec’s entire plan to stay away from her as far as he could begins to fall flat right before his own eyes. No matter how he tried to ignore her, like a moth to a flame he was attracted to her. When circumstances fell into place, they slowly began to get closer, creating more connection and strengthening the bond between them. Elristeya soon realized that Alec was no prince charming of hers but her beautiful downfall. Her perfect nemesis. Her flawless damnation. Theirs was the mate bond that was never supposed to be formed. Forbidden right from their births and when they try to fight against the fate that binds them, ugly and haunting secrets, capable of ruining them both and those they cherished, from the past are unleashed, threatening the soul bond they shared.