Becoming my Step-brother's Mistress

Chapter 11

The morning sun shone into a bedroom through a wall that was completely glass. Inside was a queen-size bed with a chrome metal headboard, a black duvet cover and pink pillows. On the other side of the room were white flat panel cabinets that were open wide. Standing in front of them was a tall woman wearing a long white robe and black high heels. In the center of the open cabinet was a floor length mirror framed on either side in stylish clothing, mostly black and pink. The woman stared at her reflection. She looked to be in her mid-twenties with red lipstick on her thick lips, and dark mascara over her sky blue eyes. She had a slightly upturned nose, a narrow chin, and long platinum blonde hair that flowed over the shoulders of the long white robe. She pulled the robe closed and tied the belt around her small waist when she heard the doorbell ring. She closed the cabinet doors, leaving an almost seamless flat white wall.

She took a couple of slow breaths and then walked down the hall, her heels echoing down the corridor. The hall opened up to a huge living room filled with dark wooden bookcases and plush leather couches. The outer walls were made entirely of glass with a white cantilevered ceiling.

To the left was the glass front door, on the other side of which was a young man who was at least six feet tall. He had brown skin and was built with a trim waist and wide muscular chest wrapped in a white v-neck. A pair of silver crucifixes hung around his neck. His biceps were muscular and his thick black hair was styled in a short mohawk fade. He had light brown eyes and a square chin with a soul-patch beneath his thick lower lip.

He looked at the attractive woman through the thick glass, the only barrier between them.

She untied her robe and pushed it off, over her shoulders. The robe fell to the floor, revealing her hourglass shaped body, dressed in black lingerie with a garter belt and pantyhose. Her ample bust looked amazing in the lacey underwear. The man stared at her breathtaking body and smiled from ear-to-ear.

On a pedestal in front of the door was a small keypad. He entered a four digit code, and after the door unlocked with a click, he stepped inside. She turned around and began to walk away, showing her full round butt in thong underwear, as her hips swayed from side to side seductively.

"Damn Autumn, I've missed that ass," he said.

She was silent, only her heels clicking as she walked down the hall. He followed her into the hall past one bedroom until she turned to face him, in front of another open bedroom door.

"I like the outfit. We the only ones here?" He asked, as he reached out to grab her. She caught both of his strong hands before they got a chance to touch hips.

"Everyone comes back tomorrow. And Merlin... no touching. Lay on the bed," she ordered, pointing to the bedroom. He could have easily overpowered her, but her change in attitude must have interested him, because he didn't argue.

"You have something kinky planned girl?" Merlin asked. As he entered, he pulled off his shirt and threw it to the floor in one clean motion. His crucifixes made a clinking sound as they fell together on his wide chest. His chiseled abdominals were like an underwear model, but his arms and shoulders were a little bulkier.

"I want to try something new," she said, placing both hands on her hips and sticking her large breasts out as he kicked off his sneakers and lay flat on the bed.

She went to the bedside table and opened the small drawer there. While her back was facing Merlin, he grabbed her large, well-shaped butt.

"You gonna let me into that ass?"

She turned with a hint of anger on her face, but it quickly faded.

"I said no touching," she said, pulling away his hand after she turned around. She was holding fuzzy pink handcuffs in her hand. "But if you're a good boy, maybe I'll give you a treat."

"I think you know I'm not a good boy, but I'll try," her said with a smile.

"Take off your pants," she said.

He quickly unbuckled his belt and pulled off his loose trousers, tossing then onto his shirt in the corner. Like always, he was commando. Autumn glanced at his thick dark c**k and then looked him straight in the eye. She fought the urge to stare at his impressive genitals. Merlin held out his hand as he lay on the top of the bed. She grabbed his wrist and clasped one end of the handcuff tightly around it. She pushed his hand back and clasped the other end of the handcuff to the metal frame of the bed.

"Isn't this Ashley's room?" He said looking at the black bed with the pink pillows. "Why not yours?"

"She's the only one that has a headboard like this," Autumn replied. She handcuffed his other hand to the opposite side of the bed as a smile crept across her glossy lips. "So, let's get started," she said.

"Oh yeah. Gimme dat ass."

"I don't think so," she replied. "Ok, Mom!" she said loudly as she folded her arms beneath her chest. Then Merlin heard the sounds of footsteps down the hall.

"Hello Merlin," said a woman in a long mustard yellow dress as she came into view. She had a beautiful oval-shaped face similar to Autumn. She was shorter and looked like she could be Autumn's sister. There were the hint of crows feet at the corners of her green eyes and her champagne blonde hair was pulled back into a ponytail. The sleeveless midi dress was buttoned all the way down the front and ruffled along the bottom edge. She was carrying Autumn's white robe and handed it to her daughter.

"Hey Cara," Merlin replied. "This suddenly got more exciting. Mother-daughter threesome?" He spoke casually, which was a stark contrast to his current predicament.

"No," Autumn said.

"The... we can't... anymore," Cara spoke with an unsure and quiet voice.

"What are you talking about?" he asked.

"No more fooling around with me or mom," Autumn explained as she put on the robe, covering her body. "I saw you with Cara that night after the whole family was in the sauna. She went into your room and I could hear from the other side of the door what you were doing."

Merlin's expression did not change.

"Do you deny it?" Autumn asked.

"I f****d her," he said plainly. "Is that what you wanted to hear?"

"You're an asshole," she said. "Why would you do that?"

"It's not as big a deal as your making it."

"Not a big deal?" Her voice was rising. "Cara, my mom, is married to your Dad, Mathew, and you were f*****g her, your own stepmother?" She said the last words almost yelling. "I wasn't enough? Even if I'm your step-sister?"

"First stop calling Mathew my dad. I've hardly even known him for a year. Next, why didn't you ask about it then? Or we could have talked on the phone, instead of whatever this is," he rattled the cuffs. "And it's not like you or Cara didn't have a say. You both wanted it."

Autumn scowled and Cara looked ashamed.

"That's why you got my number and had me come to this family get-together early? It's been almost three months, have you been stewing this whole time?" he asked.

"N-no. I thought you were going to just deny it. I've had a boyfriend cheat on me before."

"I'm not your boyfriend. You're cheating on your boyfriend with me."

"Kids, let's not-" Cara began.

"Not now mom," Autumn said, cutting her mother off. "Merlin, you took advantage of me, of us," she corrected herself.

"I don't think so," he said. He tilted his knee up and his big c**k bounced onto his other leg with a flop. Cara's eyes went to the motion between his legs, but she quickly brought them back to his face as she tried to focus.

"Well...that first time-" Autumn started.

"You wanted it as much as I did, maybe more. But you have me at a disadvantage now," Merlin said, as he pulled his cuffs tight, his biceps and chest flexing as he causing the handcuffs to clang against the metal loudly.

"Honey maybe we should let him go, this is a bit much," Cara said.

"No. I'm, I mean we're just putting him in his place. Do you think he even cares about you or Mathew?" she asked. "Maybe he's just trying to break you up or something?" There was a pause, but Cara didn't reply to her daughter's questions. "Or are you just a s*x addict?" Autumn asked him.

"Really? Are you done asking your questions?" He laughed. "Can you let me go now?" he asked calmly. He shifted his pelvis again and his d**k flopped to the other side. Cara tried not to linger her gaze on his tasty looking d**k for too long. It was difficult focusing on his face.

"I think it's enough," Cara said.

"Umm.. what?" Autumn asked, losing her train of thought.

"We done with the Spanish Inquisition then? You had your fun, you made me look like a jerk, now let me go," he said with steel in his voice.

"No. I want you to promise that you won't f**k mom anymore," she replied.

"What? She's a grown ass woman, she can make her own decisions."

"Autumn I-"

"Promise," Autumn said again.

"You don't trust your mom?"

"That's not it."

"Merlin, I-"

"f**k both of you," Merlin said with a smirk. "In fact I think you can't resist this brown d**k, so you're trying to get me to leave. You can't control yourself around me." Cara frowned when he said that. "Why don't you both just get to work on my d**k. You know you want it. You sluts are probably wet right now just looking at this thing." He shifted his c**k again, drawing extra attention to his massive phallus.

Cara sighed. Her stepson was attractive, and confident, which made him even more attractive, but this was too much. He was just being rude now. The mother and daughter began to speak quietly together.

"Mom, we agree right, he's being a bastard."

"Don't use that word, but yes, he's a bit of a jerk," Cara said.

"A bit?"

"Ok, a big jerk."

"Yes. Should we tell Mathew?"

"No, no, we agreed not to do that. It would make us all look bad. And we're staying here, even him, overnight. In the morning we're going to talk about the family trip with Mathew. We're going to leave for Spring Break in only a few weeks now. We need to find a way to make it work."

"Not sure I want to go to Brazil with you two if there is more of this planned..." Merlin said rattling the hand cuffs.

"Shut up," Autumn said hashly.

"Autumn," Cara said, trying to draw the attention of her daughter back to her, "you know how he first thought we were both..." Cara stopped.

"What?" Autumn asked.

Cara suddenly grinned. "I have an idea." She whispered very softly into Autumn's ear.

"Really? I'm not sure. Hmmm" Autumn sighed. "Ok," she said. She turned to face Merlin.

"Guess you got what you wanted then."

"Huh?"

"You'll see," Cara said, getting up on the bed. Autumn got up next to her.

"Have a feeling this isn't gonna be some mother daughter love fest..."

"Just relax," Cara said as she pulled up her dress around her hips and sat on his legs. She took his dark meat in her hand and began to pull on it.

"So far so good," Merlin said with a smile.

"Sure," Autumn said, rolling her eyes as his d**k started to engorge.

"Thought you were pissed, what's going on?"

"We agreed to let you have some fun for now. One last time, but...," Cara paused.