The In-Law Mistress

The In-Law Mistress

last updateLast Updated : 2026-07-16
By:  Mrs JMUpdated just now
Language: English
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One night to save her future. One forbidden agreement with the man she should never touch. For Elena Thorne, selling herself online is a last resort to pay her college tuition after her cruel stepmother cuts off her allowance. However, Elena's world collapses when the door to the luxury hotel room opens. The man who booked her that night is Julian Vance, a cold billionaire and her own brother-in-law. Instead of letting her go, Julian makes a definitive threat and a dark offer. He will provide for Elena's every need, guaranteeing she will become his exclusive mistress. Behind Julian's lavish wedding, which is shattered by his wife's betrayal, Elena is caught in an adrenaline-fueled game of passion. They make love behind their families' backs, cultivating a dangerous addiction amidst their taboo relationship. When fear turns to love, can Julian break down his cold walls to protect his sister-in-law, or will this scandal destroy them both?

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Chapter 1

Chapter 1

Elena Thorne’s heart felt as though it was about to leap out of her chest the moment the door to Room 808 glided open. She had never anticipated that the man who wanted to purchase her virginity was Julian Vance, the cold-blooded billionaire and her very own brother-in-law.

The oxygen in Elena’s lungs vanished instantly. "J-Julian?" Her voice was a mere whimper, her face turning deathly pale in an instant.

"I-I'm sorry! I must have entered the wrong room!" In a sheer panic, Elena spun around, preparing to flee from the place that had suddenly transformed into a living hell.

"There is no mistake, Elena," a deep, chilling baritone voice halted her right in her tracks.

Julian set down his glass of whiskey and walked toward her. His eyes scrutinized Elena from head to toe with an incredibly sharp, condescending gaze.

"So, this is how my supposedly innocent sister-in-law behaves when she’s away from home?" Julian sneered, a cynical smirk carving into his lips.

"Wearing a dress this tight and revealing, coming to a luxury hotel at midnight. What price tag did you put on your body, Elena? Is the money from Richard not enough that you have to beg in a stranger's bed?"

Elena’s face flushed crimson, an overwhelming wave of humiliation burning through her chest. "It’s not what you think, Julian! Please, let me leave—"

"Leave?" Julian chuckled, a sound that carried a dangerous edge.

He reached into his trousers pocket, pulled out his phone, and turned the screen directly in front of Elena's face. "Then how do you explain this?"

Elena's breath caught in her throat. Displayed on Julian’s screen was a photo of her wearing red lingerie in an erotic pose. The exact photo she had been forced to upload to a paid online site to sell her virtue.

"I wonder, what would Richard do if I sent this photo right now?" Julian threatened, his finger hovering over the send button on her father's contact profile.

"Your old-fashioned father would surely throw you out of the family lineage immediately."

"Don't, Julian! Please, don't!" Elena trembled, tears beginning to pool in her eyes.

If her father found out, she would be completely finished. Beatrice, her stepmother, would undoubtedly use the opportunity to banish her forever.

Julian lowered his phone, stepping forward until his towering frame pinned Elena against the wall. He leaned down, bringing his lips close to her ear.

"You know, ever since I first saw this photo on that site, I've been incredibly curious ... just how exquisite my sister-in-law's body is, hidden beneath those baggy clothes you always wear," Julian whispered in a dark, sensual, and wicked tone.

"I can't wait to taste you. To shatter your innocence, and take that purity you pride yourself on."

Julian's warm, alcohol-scented breath burned against the skin of Elena’s neck. "Tonight will be a night you will never forget, Elena. Because I am going to make you scream my name until you are completely weak," he whispered again.

The wicked whispers from her brother-in-law made Elena's body run hot and cold. Fear, shame, and a bizarre sensation she had never experienced before tangled inside her.

She wasn't even aware when Julian's practiced hands swiftly unzipped the back of her dress. In an instant, the black fabric pooled uselessly onto the floor.

"Julian, don't—"

Thud!

A second later, Julian directly pinned Elena down onto the plush mattress. The girl gasped. Reflexively, she crossed her arms over her chest, trying to push backward in resistance.

However, Julian immediately loomed over her, locking her movements down. "Don't play innocent now, Elena. As the buyer, I have already paid a hefty sum upfront. I don't mind giving you a much larger tip, provided you manage to satisfy me tonight."

Without granting his sister-in-law any chance to beg, Julian began tracing wicked, sensual caresses along her skin. His fingers moved wildly, initiating an intensive foreplay that slowly caused her joints to feel weak and heavy.

"Julian, please, don't do this! I am your sister-in-law. Wake up," Elena pleaded softly. She kept shaking her head, begging in a raspy voice for her brother-in-law to release her. But the billionaire turned a deaf ear.

Julian's cold threats continued to flow between his caresses. Cutting off any room for the girl to escape.

"Shh, instead of keeping yourself busy resisting, it's better if you just enjoy this game. Don't forget, by selling your body on an online site, it means you're the one who started it," he hissed.

Elena’s humiliation spiked to a torturous degree when the man forcibly stripped away the last remaining garment shielding her body. Now, her body lay completely bare, without a single thread covering her.

The beauty of her most sensitive core was vividly exposed beneath the dim room lights. Julian stared down at the gorgeous view beneath his dominant frame with a ravenous gaze.

"Absolutely beautiful, Sweetheart," the man hissed. He began to slide his fingers over her sensitive area, delivering a highly demanding stimulation.

Elena felt utterly degraded yet entirely powerless. Her brother-in-law's highly skilled touch forced her bare body to betray her own logic.

The weakness spreading through her limbs morphed into an uncontainable surge of desire, until inadvertently, "Ahhh …." a soft moan escaped her lips.

The man smirked with satisfaction, his eyes gleaming with total victory. "See? Your body can't even lie about how much you enjoy my touch, Elena."

He then lowered his body, preparing to replace the friction of his fingers with the heat of his tongue against her sensitive core. Yet right at that crucial moment, the ringing of a phone shattered the silence of the room.

Elena, already half-dazed, tried desperately to gather her scattered senses. "J-Julian ... your phone is ringing. Answer it first," she murmured weakly, attempting to divert his attention away from her.

But Julian ignored it. His touches only grew more demanding.

A second later, it was Elena's own phone that began to ring inside her clutch, which lay on the nightstand near the bed. With what little strength she had left, she reached blindly across the nightstand and managed to grab her phone.

The moment her eyes locked onto the name displayed on the digital screen, Elena's heart seemingly stopped beating. [Victoria calling ...]

"Julian, stop! Victoria is calling me!" she hissed, her voice shaking. She desperately hoped that the mention of his wife's name would bring Julian back to his senses and halt this madness.

However, the man merely stared at the phone with an incredibly cold, wicked smile. Instead of backing away, he snatched the phone right out of Elena's hand, sliding the green button to accept the call without a shred of hesitation.

As he pressed the phone tightly against Elena's ear, Julian's free hand deliberately violated the sensitive core of his sister-in-law's body once more, forcing the girl into agony as she stifled a gasp of pure pleasure.

"Speak to your sister, Elena," Julian whispered in a low, immensely cruel undertone amidst his caresses. "Tell her you're currently busy serving her husband."

Elena shook her head violently as tears spilled from her eyes. She refused to speak. Her face was a portrait of desperate pleading, begging her brother-in-law to turn off the phone.

However, Julian merely brought the screen closer to Elena's lips while whispering a dark threat, "If you don't speak, then I will be the one talking to Victoria right now."

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