Possessive Stepbrother's Billionaire Obsession (Stepbrother's Forbidden Fantasies #22)

1. Millie

MILLIE

I step into the Grand Astor Hotel's ballroom and freeze.

The space stretches before me like something out of a dream—or maybe a nightmare, given how out of place I feel.

Crystal chandeliers hang from the vaulted ceiling, each one probably worth more than four years of my college tuition.

Women glide past in gowns that probably cost more than everything I own, dripping in diamonds that catch the light with every movement.

Men in suits that I know must be custom-made cluster in groups, discussing things I can barely comprehend.

I smooth my hands down the black cocktail dress I'm wearing. It's the nicest thing I own—bought on sale at Nordstrom Rack three months ago for a formal dinner I had to attend. Here, surrounded by this level of wealth, it might as well be from Target.

My phone buzzes. Mom's text reads: Did you find him yet?

I type back: Still looking.

This whole situation feels surreal. A month ago, my mother Nancy married Frank Graves in a small ceremony at City Hall.

Frank is successful—comfortable, even wealthy by normal standards.

He owns a consulting firm, lives in a nice brownstone, drives a Mercedes.

But this? This level of extravagance is beyond anything I've experienced.

And now I'm supposed to find my new stepbrother. Maxwell Graves. The son I've never met because he was allegedly "out of the country on business" during the wedding. All I know is that he's older, he's Frank's son from his first marriage, and he's supposed to be here tonight.

A waiter appears beside me with a tray of champagne flutes. I take one just to have something to do with my hands.

I navigate through clusters of Manhattan's elite, catching fragments of conversation that make my head spin.

A woman in a red dress discusses her recent acquisition of a Monet.

Two men debate the merits of their respective private islands.

Someone mentions a merger involving billions—not millions, billions—like it's casual dinner conversation.

Several older men give me appreciative looks as I pass. Their attention makes my skin crawl. I'm nineteen, barely out of my first year of college, and I feel like prey among predators.

I text Mom again: What does he look like?

Her response comes quickly: Tall, dark hair, handsome. You'll know him when you see him.

That describes half the men here. I resist the urge to throw my phone across the room.

Then I see him. It has to be him. My stepbrother.

He's standing across the ballroom with a group of men in expensive suits, but he dominates the space in a way that has nothing to do with the conversation.

He's impossibly tall—at least six and a half feet—with broad shoulders that strain against his perfectly tailored suit jacket.

Black hair, sharp jawline, a neatly trimmed beard that's graying at the edges in a way that makes him look distinguished rather than old.

Even from this distance, I can see his eyes—gray, intense, assessing everything around him with an authority that makes my breath catch.

My pulse quickens. Heat floods through my body in a way I've never experienced.

He's older. Much older than I expected. Early forties, maybe. The realization should cool my reaction, but it doesn't.

I notice tattoos peeking out from under his cuffs. The ink is unexpected, intriguing—a hint of something dangerous beneath the polished exterior.

Then he turns, and our eyes lock across the crowded room.

The intensity of his gaze hits me like a physical force. He's looking at me like he can see through my simple black dress, through the careful composure I'm trying to maintain, straight into the nervous, overwhelmed girl beneath.

He excuses himself from his group and walks directly toward me. Each stride is confident, purposeful, predatory. I should move, should do something other than stand here frozen, but I can't.

He stops directly in front of me, looking down at me with those intense gray eyes that seem to see everything.

"So you're my new shiny stepsister," he says. His voice is deep and controlled, with underlying amusement that makes heat pool low in my belly.

I manage to find my voice despite the way my heart is racing. "And you're the stepbrother who couldn't be bothered to show up to our parents' wedding."

His lips curve into a slight smile. He's amused rather than offended by my directness. "Business in Tokyo. Unavoidable. I sent an extremely expensive gift as apology."

"How thoughtful. I'm sure that made up for missing your father's wedding."

His smile widens. "Maxwell Graves. Most people call me Mr. Graves. You can call me Max."

The subtle flex of power in that statement isn't lost on me. Permission to use his first name is a privilege he's granting.

"Millie Carter," I say, taking a sip of champagne to steady myself.

Maxwell places his hand on my lower back—a possessive, proprietary touch that sends electricity through my entire body. "Let's find somewhere quieter to talk, stepsister."

He guides me away from the crowd, toward floor-to-ceiling windows overlooking Manhattan. The city stretches out below us, a glittering expanse of lights and possibilities.

"Tell me about yourself, Millie," he says, his attention focused entirely on me in a way that's both flattering and intimidating.

"I'm a college student. Ashford University. Literature major." The words come out steadier than I feel.

"Ashford." He nods. "Good school. Expensive."

"Your father insisted on paying the tuition. Mom fought him on it, but..." I trail off, uncomfortable discussing the financial arrangements.

"Frank's generous when he wants to be." Maxwell's expression reveals nothing about what he thinks of his father's decision.

Add here, that maxwell is starting to speak again but millie interrupted her, saying that she still dont know about him.

Maxwell chuckles, says, what do you want to know about me dear stepsister.

Millie will say, I dunno, maybe… gets flustered, what books do you read? Then gains her confidence back.

Maxwell laughs, but answers honestly. After millie is satisfied, he said.

Now tell me about yourself, millie.

"What year are you?"

"I just finished my freshman year."

Something flickers in those gray eyes—calculation, maybe. "Nineteen?"

"Yes."

"Very young." The way he says it makes my stomach flip.

"Legally an adult," I counter, defensive.

"Legally, yes." He moves closer, crowding my space in a way that should feel threatening but instead feels intoxicating. "But still so innocent. Still so... inexperienced."

Heat floods my cheeks. "You don't know anything about me."

"I know you're attracted to me." He leans in, lips near my ear.

"I can see it in the way you're breathing, the way your pupils dilate when I get close.

""Tell me about yourself, Millie," he says, his attention focused entirely on me in a way that feels both flattering and deeply intimidating.

It's like being caught in a spotlight—nowhere to hide, every reaction visible.

"I'm a college student. Ashford University. Literature major." The words come out steadier than I feel, which is a minor victory given the way my pulse is hammering.

"Ashford." He nods, something approving in his expression. "Good school. Expensive."

"Your father insisted on paying the tuition.

Mom fought him on it, but..." I trail off, uncomfortable discussing the financial arrangements.

It had been a tense conversation between our parents, one I'd overheard through closed doors.

Mom's pride versus Frank's insistence on treating me like his own daughter.

"Frank's generous when he wants to be." Maxwell's expression reveals nothing about what he thinks of his father's decision. No warmth, no criticism—just a statement of fact.

He opens his mouth to continue, but something makes me interrupt. Maybe it's nerves, maybe it's the champagne, or maybe it's just the unfairness of him knowing things about me while I know nothing about him.

"Wait," I say, holding up a hand. "I still don't know anything about you."

Maxwell stops, eyebrows raising slightly. Then he chuckles—a low, genuinely amused sound that does dangerous things to my composure. "What do you want to know about me, dear stepsister?"

The endearment sounds almost mocking, but there's warmth underneath it.

I flounder for a moment, my mind going embarrassingly blank under his focused attention. "I dunno, maybe..." My cheeks heat as I search for something—anything—that won't sound stupid. Then inspiration strikes, probably from my literature-major brain trying to salvage this. "What books do you read?"

I gain some confidence back as I add, "You can tell a lot about a person from what they read."

Maxwell laughs outright at that—a real laugh that transforms his face, making him look younger and somehow even more attractive. "Books. You want to know about my reading habits."

"Is that funny?" I ask, defensive now.

"No." His smile softens. "It's unexpected.

Most people ask about my companies, my net worth, my properties.

" He considers for a moment, and when he answers, his voice is honest, unguarded in a way I wasn't expecting.

"I read history, primarily. Military strategy, empire building, the rise and fall of power structures.

Some philosophy—Machiavelli, Sun Tzu. And when I need to shut my brain off, crime thrillers. "

I blink, processing this. It fits him somehow—the strategic mind, the interest in power and control.

"Satisfied?" he asks, amusement back in his voice.

"For now," I say, though I file the information away like it matters.

His expression shifts then, becoming more intense. "Now tell me about yourself, Millie. What year are you?"

"I just finished my freshman year."

Something flickers in those gray eyes—calculation, maybe, or assessment. "Nineteen?"

"Yes."