Best 18+ Novels

I never meant to fall for Nicholas Cross. He's my best friend's father. A billionaire hotel mogul. He was eighteen years older than me and completely off limits. But when Riley begs me to spend Christmas at their Aspen estate, I can't say no. She needs backup dealing with her nightmare mother and the boy toy fiancé. I tell myself I can handle two weeks of pretending Nick doesn't make my heart race every time he walks into a room. Then a snowstorm traps us together. His ex-wife shows up determined to destroy him. And late one night in his study, Nick looks at me like I'm not just his daughter's friend anymore. Riley gives us her blessing. His mother thinks I'm a gold digger. His ex-wife will use our relationship to take everything from him. The world will judge us. But when Nick looks at me like I'm his whole world, none of that matters. Until Amanda plays her final card. And I have to choose between protecting the man I love or losing him forever. This Christmas, some rules are made to be broken.

I know it’s wrong to want my dad’s best friend, a man who was old enough to be my dad, but what could I possibly do when I see him in my dream and imagination each time I close my eyes? What could I do when this desire keeps driving me nuts, when I keep getting wet down there just at the sight of him? I tasted the forbidden fruit, and I liked it. I liked every inch of it, and now I can’t bring myself to stop wanting more…

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.

Three years ago, Alicia Brown walked away from the only man who had ever made her feel undone. After a reckless one-night stand with a powerful stranger, she slipped out of his hotel suite, convinced that disappearing was the only way to protect her heart. No names or contact information were exchanged—only a connection so consuming it frightened her. She never imagined fate would bring her back to him. Until she steps into her best friend’s home for the holidays… and comes face-to-face with Rhys Connell. Her best friend’s father. The same man who gave her the most unforgettable night of her life. Wealthy. Controlled. Devastatingly composed. Rhys is a widowed billionaire with a reputation for discipline and emotional restraint, a man who would do anything to protect his daughter. The moment their eyes meet, the past ignites. He remembers the girl who trembled beneath his touch, the girl who vanished without a trace. And the only woman who has haunted him for three years. Now she is under his roof, laughing beside his daughter, and staying in the same house with him. Wanting her once was a secret. Wanting her now is betrayal. But Rhys has never been a man who forgets what belongs to him. And Alicia is about to learn that walking away from him once does not mean she was ever truly free.

I’ve loved my best friend’s father for years. Damian Cole is untouchable. A cold, powerful tech billionaire who built an empire from nothing. He’s disciplined. Controlled. Off-limits. And completely unaware that every time he looks at me, my heart forgets how to beat. Until the night he catches me sneaking out with another man. The way he looks at me changes. The way he touches me changes. The rules change. What starts as one reckless kiss turns into a secret we can’t control. A love we shouldn’t want. A betrayal that could destroy the one person we both care about most — his daughter, my best friend. And when I discover I’m pregnant… I realize loving him won’t just ruin a friendship. It might ruin everything. But Damian Cole doesn’t lose what belongs to him. And this time… he’s choosing me.

My husband, Simon Fuller, brings home his secretary, Alicia Reed, who has just given birth. He expects me to take care of her while she recovers from the delivery. Instead of tossing Alicia's things out, I put on my apron and prepare a nutritious meal. Since then, I've been reduced to the biggest laughingstock in our social circle. Despite being Simon's lawfully wedded wife, I'm treated like the housekeeper. I spend my entire day waiting on Alicia and changing the diapers of Simon's illegitimate son, Mason Fuller. Satisfied with the way I've been fulfilling my role as his dutiful wife, Simon brags to his friends, "Zoe's far too madly in love with me. As long as I don't divorce her, she's willing to put up with all kinds of mistreatment. "She also said that a hired nanny couldn't be trusted and insisted on raising Mason herself." Banking on the fact that she'd given Simon a son, Alicia orders me around like a housekeeper, demanding that I wash her clothes for her. Everyone starts placing bets on when I'll finally lose my mind. The bet ends up going on for 18 years. By now, everyone says I have to be hopelessly in love with Simon. I've willingly sacrificed 18 years of my youth, reduced to being a housekeeper, all in the hopes of winning him back. However, I'm the only one who knows the truth. This whole time, I've been waiting for Mason's 18th birthday party. Once he turns 18, I will finally receive 30% of Fuller Group's shares.

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?

Warning: Smut! Smut!! Smut!!! Rated 18. Captured by an Alpha Daddy for Christmas contains possessive alpha behavior, forced proximity, age-gap romance, plus-size heroine, daddy-dom dynamics, jealousy, obsessive protectiveness, power imbalance, and holiday-season intimacy. Not suitable for readers under 18. ~~~ Dumped a week before Christmas, Annabelle “Belle” Evans forfeits her plan to spend Christmas with her narcissistic boyfriend in New York, and agrees to travel back home to Big Bear Lake with her perfect model sister and her nerdy brother-in-law. But a funny Christmas wish has other plans for her. When their car breaks down in the middle of nowhere, Belle wanders off for help and finds herself cornered by a wolf in the snowy woods. Just when she thinks she’s about to be torn to pieces, a massive stranger appears—tall, broad, and sinfully hot, his eyes glowing amber in the moonlight. He saves her life… and then claims her as his. He takes her to his secluded cabin deep in the woods, refusing to let her leave until she’s “healed.” But the way his hands linger on her skin, the way he looks at her curves like she’s a meal he needs to taste, Belle starts to realize the wound he really wants to tend to is the one between her thighs. He’s dangerous. He’s dominant. He’s sexy. He’s everything she wished for when she jokingly wrote to Santa for a “hot werewolf boyfriend.” Now she’s trapped in his arms, a prisoner to his touch, his heat, his growl, and the wild, wicked love burning between them might just make this her best Christmas ever.

I make a mistake. A rash and intoxicating mistake. One night. A stranger. A fire that burns my skin and leaves me breathless. But when the morning light comes, I run—leaving behind nothing but shame and a few crumpled bills. I think I’ll never see him again. Until I step into the towering kingdom of Wilder Group... and meet ーhim. Kai Wilder Reyes. A ruthless billionaire. The man who rules the city with just a snap of his fingers. The man who shares an unforgettable night with me. And worst of all—my best friend's uncle. His grin is sinful. His touch is deadly. His words are a trap I can’t escape. "I can destroy your husband for you, Vivian," he whispers, his lips dangerously close. "Make him regret ever betraying you." My ex-husband, Adrian Cownell, has shattered my heart, and Kai offers me justice on a silver platter. But at what cost? Because Kai never does anything for free. And when I ask him what he wants in return, he smiles. A slow, dark, wicked smile. "I want you, Vivian."

Eggust Flemming had been obsessed with his mom’s best friend all his life and vowed that the next time he saw her he’d never let her go Juss índigo thought her life would end when she discovered she was pregnant for the little boy she had a one night stand with who happened to be her student and best friend’s son. But it was just the beginning of something she never saw coming