Upton Sinclair Novels

She asked her best friend to take her virginity. He said no—at first. Eighteen-year-old Wren Sinclair has always played the good girl—smart, responsible, careful. But a month to her birthday, she asks her best friend for the one thing no one would expect from her: sex. Just once. Just to get it over with. Except Kai Anderson—gorgeous, cocky, and maddeningly protective—doesn’t play by simple rules. Saying yes might wreck the most important relationship in his life. Saying no? That only makes the fire between them burn hotter. As stolen touches, whispered lessons, and forbidden fantasies begin to blur the lines between friendship and something far more dangerous, Wren finds herself spiraling. Her body wants everything Kai offers. Her heart is starting to want even more. Because falling for your best friend? That was never part of the plan. A sizzling slow burn filled with banter, heartbreak, and back-to-back sexual tension.

Marry a man for money and he would make you work for every penny.. Kelsey Sinclair abandoned everything she had ever known to marry the billionaire heir, Marcus Phillip. Fairy tales do come true and lucky people fall in love after an arranged marriage, but that wasn’t her case. Marcus did not love her, neither did she love him, but her father was drowning in debt and marrying him was the only way to save her father. Marcus was a literal eye candy. Pleasant to look at and stacked with enough assets to make sure his great grandchildren inherited enough to last them a lifetime. He was every woman’s dream; kind, rich and with the body of a god. But, beyond the surface, he was worse than the devil himself. Now, Kelsey is forced to run away from a cold world with Marcus but unknown to her she gets dragged into the controlling and dominating world of Andre Alessandro, a more dangerous version of Marcus.

Betrayed. Broken. Stripped of everything she once called hers. Elysia Sinclair thought she had already lost it all—until she lost the one thing that truly mattered. Her baby. Left bleeding and abandoned in a cold hospital room, she swore revenge. But what could a woman with nothing do against the man who destroyed her? Enter Adrian Blackwood. Ruthless, calculating, and as dangerous as they come. He doesn’t do charity. He doesn’t do kindness. But when he looks at Elysia, he sees something more—something raw, something familiar. "Sign these papers, leave him, and marry me," he says, his voice a dark promise. "I'll help you get your revenge." It’s a deal with the devil himself, but Elysia is too shattered to refuse. One signature, and she goes from the discarded ex-wife of a billionaire to the new bride of a man even more powerful. But Adrian didn’t just want a wife. He wanted her. And as he slides his ring onto her finger in front of the man who betrayed her, a shiver runs down her spine. Because in Adrian’s eyes, this isn’t just a contract—it’s possession. Now, tangled in his world of power plays and whispered threats, Elysia must ask herself— Is she using Adrian to destroy her past? Or is he using her to rewrite his own? One thing is certain: when you strike a deal with the devil, there’s no turning back.

Elliot Sinclair has it all—money, power, a picture-perfect fiancée, and the eyes of the world watching his every move. But behind closed doors, his life is anything but perfect. Because Elliot is in love. With Jonah Hartfield. A man. Jonah is everything Elliot shouldn't want—fierce, reckless, possessive. Their affair is a powder keg of passion and danger, one kiss away from destruction. The world can't know. His family can't know. And Clara, the woman he’s supposed to marry for the cameras, definitely can’t know. But Jonah is done playing games. He doesn’t care about appearances. He doesn’t care about the cameras. He just wants Elliot. Completely. And he’s not interested in sharing. When jealousy boils over and secrets get harder to hide, Elliot is forced to choose: keep pretending for the world—or burn it all down for the man he can’t live without.

Title: Married Again Genre: Steamy Romance | Age Gap | Heir/Heiress Sebastian Wolfe had it all—money, power, and a last name that commanded respect. As the CEO of Wolfe Enterprises and a widowed father in his forties, he wasn't looking for love. His first marriage had been a cold arrangement built on duty, not desire. But when a whirlwind scandal threatens his empire, he does the unthinkable: marries again. This time, it’s different. This time, it’s Aria Sinclair—twenty-two, dazzling, and dangerously off-limits. The daughter of a powerful rival, Aria is everything Sebastian shouldn't want: impulsive, rebellious, and young enough to be his daughter. But her beauty is blinding, her tongue is sharp, and her presence ignites a fire he thought long dead. What starts as a strategic alliance quickly spirals into something darker, deeper, and much more dangerous. Their chemistry is undeniable—raw, electric, forbidden. Every stolen glance, every heated touch threatens to unravel the strict control Sebastian has clung to for years. But Aria isn’t just a trophy wife or a pawn in his business game—she's the wild card that could destroy everything… or save him from himself. As secrets rise and the past claws its way into their present, Sebastian must face the hardest truth of all: marrying Aria might have been his greatest risk—but losing her could be his ultimate downfall. Married Again is a seductive tale of age-gap obsession, power plays, and a man learning that sometimes, love doesn’t come in the form you expect—it comes in the fire you never saw coming.

She was running from a man who owned her past. He was the man willing to fight for her future. Cassie Davidson doesn’t do love. At least not anymore. A talented cook with a locked heart, she lives by one rule: never get too close. But when George Sinclair, a soft-spoken billionaire with sharp eyes and a quiet fire, walks into her life, her rulebook starts to crack. George sees through her walls. He doesn’t ask questions but also never misses a detail. And when Cassie begins to let him in, she feels something she thought she lost forever... Safe. Just when she's beginning to breathe again, her nightmare returns. Xavier, the ex she barely escaped, is back. And this time, he's not playing fair. Caught between the ghosts of her past and a man willing to rewrite her future, Cassie must decide: will she keep surviving, or finally choose to live, fight? Hearts Unchained is a slow-burn billionaire romance pulsing with emotional tension, deep healing, and a love worth breaking chains for.

Ava Sinclair had two rules for her dream New Year's cruise: no heartbreak and no impulsive flings. But when she catches her boyfriend cheating and a charming stranger, Ryan Carter, offers a deal she can't refuse, pretend to be his girlfriend in exchange for revenge. Her carefully laid plans are tossed overboard. What started as a harmless charade turned into a whirlwind night of passion. But when the cruise ends, Ava and Ryan return to their lives, leaving their connection behind. Ryan showed up months later needing Ava's help to maintain a facade for an Important business deal. Ava agreed again despite her better judgment only to find herself thrust into the spotlight when their photos went viral, branding her as Ryan's girlfriend to the world. Caught between her desires to stay out of the limelight and her undeniable feelings for Ryan. Ava must confront the truth: was their connection always just an act or is there something real worth fighting for?

Lilienne Winslow "I'm a mess of warm chaos but I won't let you see it in my eyes, I smile every time but I won't let you see the sadness behind them ,it's pathetic" Rowan Sinclair "Your chaos doesn't frighten me; it draws me in. you wear a smile that dances like sunlight through shadows, but know this, my love: I see beyond the facade. Behind those shimmering eyes lies a world of storms, and it's not pathetic, it's beautifully human. Let me be your anchor in this tempest; let me cradle your sadness and transform it into something radiant. Even when you feel lost, I'll be right here, holding you tight." Neither of them ever wished for the union of marriage, not the weight of a promise, that felt more like chains. two souls adrift, untamed, untouched by love's hand.Yet fate, with silent steps, wove them into one, In a bond neither sought, but neither could withstand. He, a man of steel, a man of few words and of unshaken resolve, She, a spirit of grace, a woman of quiet strength,carrying wounds, no one cared to see. In the quiet vows exchanged, hearts kept their guard,But in the silence between them, emotions sparked, unbarred. In his silence, she found a space to breathe. In her fragility, he found something worth protecting.

Ella, une jeune femme ordinaire, souhaitait simplement devenir mère. En toute bonne foi, elle décide de recourir à une insémination artificielle à travers une clinique réputée. Mais ce qui devait être un simple acte médical va basculer dans l'irrationnel. Car sans le savoir, elle a été inséminée avec un échantillon appartenant à un homme hors du commun : Dominic Sinclair, un milliardaire froid, autoritaire… et loup-garou. Quand Dominic apprend que l’un de ses échantillons a disparu, il entre dans une fureur glaciale. Face à Ella et à sa sœur Cora, technicienne dans ce laboratoire aux secrets bien gardés, il exige des réponses. L’enfant qu’Ella porte n’est pas tout à fait humain, et il le sent dans son sang. Son héritier est en elle un héritier né d’un mélange improbable entre deux mondes censés ne jamais se croiser : celui des humains, et celui des changeurs. Ella refuse d’y croire. Les loups-garous n’existent que dans les romans… n’est-ce pas ? Mais les faits sont là. Les yeux de Dominic brillent d’un éclat surnaturel. Ses griffes surgissent à volonté. Son aura, animale, la paralyse de peur et d’attirance. Tiraillée entre la panique, la colère et le vertige, Ella découvre que le laboratoire dans lequel sa sœur travaille n’est qu’une façade : un pont entre les espèces, un centre de recherche servant de couverture à une organisation bien plus vaste, enracinée dans une société surnaturelle. Une société dirigée par des meutes, des alphas... et un roi. Mais ce qu’Ella ignore encore, c’est que son enfant pourrait être bien plus qu’un simple croisement.....un héritier mais pas n'importe lequel... Celui qui sera élu par la déesse.