Sinfully Yours StepDaddy

Chapter 3

Morning light slipped through the curtains in thin gold lines. Sienna woke with the ache between her legs still fresh, a deep pleasant soreness that made her press her thighs together the second she remembered why it was there. Roman’s scent still clung faintly to her pillow. She sat up slowly, heart already beating too fast, and listened to the sounds of the house.

Her mother was downstairs. Dishes clinked. Soft music played from the kitchen speaker. Roman’s deeper voice answered something her mother said. Normal. Ordinary. Like nothing had happened in this bed only hours ago.

Sienna showered longer than she needed to, standing under the hot water until her skin turned pink. When she finally dressed and went downstairs, her pulse was a steady drum in her throat.

Roman sat at the head of the table, black shirt open at the collar, coffee in one hand, phone in the other. He looked up the moment she entered. Their eyes met. The air between them went tight and heavy. He did not smile. He only held her gaze for three full seconds before looking back at his phone like she was nothing more than the girl who lived under his roof.

Her mother turned from the stove with a bright smile. “There you are. I made eggs. Sit.”

Sienna sat across from Roman. Every time she reached for the juice or the toast her knee brushed the table leg and she felt the ghost of his hands on her body again. Roman ate slowly, calm, controlled. Only once did his foot stretch under the table and press lightly against hers. The contact lasted less than five seconds. It was enough to make her nearly drop her fork.

Her mother talked about a charity lunch she had to attend later that morning. “I’ll be gone until at least three,” she said, pouring more coffee. “Roman, you’re working from home today, right?”

“Yes,” he answered. His voice was steady. “I’ll be in the study most of the day.”

Sienna’s stomach flipped.

When breakfast ended her mother kissed Roman’s cheek, told Sienna to behave, and left with a click of heels and the soft slam of the front door. The house fell quiet.

Roman stood. He did not look at Sienna. He simply said, “Study. Now.”

She followed him down the hall on legs that felt unsteady. The moment the study door closed behind them he turned, locked it, and crossed the room in three long strides. His hands gripped her waist and lifted her onto the edge of the desk. Papers scattered. A pen rolled to the floor.

“You’ve been walking around this house looking like you already belong to me,” he said, voice low and rough. “Do you know what that does?”

Sienna’s breath hitched. “Tell me.”

Roman pushed her knees apart and stepped between them. One hand slid under her dress, found the lace of her panties, and tugged them aside. Two fingers pushed into her without warning. She was already wet. He made a dark sound of approval.

“This,” he said, curling his fingers. “This is what it does.”

He worked her open with slow, deliberate strokes until she was gripping the edge of the desk and biting her lip to stay quiet. Then he pulled his fingers free, unbuckled his belt, and freed himself. Thick. Hard. Ready.

He didn’t ask this time.

Roman pushed into her in one deep thrust that forced a broken moan from her throat. His hand covered her mouth instantly. “Quiet,” he growled against her ear. “The windows are open.”

He f****d her hard and steady, the desk creaking under them. Every thrust drove her higher. Sienna’s hands clutched his shirt, then his shoulders, then the back of his neck. When she came it was sudden and sharp, her body clamping down around him while he kept moving through it, chasing his own release. He followed a moment later with a low, gritted sound against her neck, burying himself as deep as he could go.

They stayed like that for several breaths, joined, breathing hard. Roman finally pulled out, cleaned them both with quiet efficiency, and fixed her dress. His expression was unreadable.

“This is getting dangerous,” he said.

Sienna slid off the desk on shaky legs. “I know.”

He caught her chin and made her look at him. “I mean it. Your mother notices everything. One wrong look and this ends.”

“I don’t want it to end.”

Something raw flashed in his eyes. He kissed her once, hard and brief, then stepped back.

“Go. Before I take you again.”

Sienna left the study with the taste of him still on her tongue. She spent the next hour pretending to read in the living room while her body hummed with leftover pleasure. Every sound in the house made her jump. When her phone buzzed with a message from her mother saying she would be home earlier than planned, Sienna’s stomach dropped.

She went to tell Roman.

The study door was half open. She stepped inside and closed it behind her. “She’s coming home early. In less than an hour.”

Roman was already standing. He crossed to her, backed her against the door, and kissed her like he was starving. His hands slid under her dress again, gripping her bare ass, lifting her so she had to wrap her legs around his waist. He was hard once more.

“We don’t have time,” she whispered against his mouth.

“Then be quick,” he answered, and pushed into her again right there against the door.

It was faster this time. Rougher. His hand stayed over her mouth while he drove into her with short, deep strokes. Sienna came hard and fast, shaking in his arms. Roman followed almost immediately, forehead pressed to hers, breathing like he had run miles.

They fixed their clothes in silence. Roman unlocked the door and opened it just as the sound of a car pulling into the driveway reached them.

Sienna’s heart slammed against her ribs.

Her mother’s voice called from the front entrance. “I’m home early! Anyone hungry?”

Roman’s eyes locked on Sienna’s. His voice was calm when he answered, but his hand still rested on the doorframe beside her head, fingers tight.

“In the study,” he called back. “Just finishing some work.”

Footsteps moved down the hall toward them.

Sienna’s breath caught.

Roman’s gaze dropped to her mouth for one dangerous second.

Then her mother’s shadow appeared in