Becoming my Step-brother's Mistress

Chapter 10

Her eyes peeked over the pillow as she bit into the fabric, gazing at Merlin's face as her orgasm waned. His brow was furrowed as he grimaced. Maybe he was getting close. She could see his teeth shine in the faint light.

"Get on top," he said, pulling his thick d**k from her as he lay down. She complied, goose-bumps rising on her arms as she held his c**k to the entrance of her slit and lowered her pelvis on top of him. He tossed the pillow she had been using up on the bed. Autumn braced herself on his hard pectoral muscles, feeling his tense chest with her hands as she went up and down. He pulled off her bra, setting her large breasts free. Her boobs bounced as she rode him.

"Just stay right there" he whispered, holding her ass while he thrust up, deeper than she had let him.

"Oh," she moaned, and immediately bit her lip closed.

"Uh..." he grunted. "You ready to swallow?" he said softly.

"No just come inside," she said.

"Ok b***h, here it comes," he replied, his hips gaining speed and force. She put her hand up to cover her mouth and fell on top of him as he continued to plunge relentlessly into her hot snatch.

Suddenly his c**k exploded deep inside of her, plastering the insides of her p***y. She felt several more bursts at the end of each solid thrust as if his intent was to flood her womb. Her p***y pulsed and then quaked as she came one last time, almost in cue with his last fevered thrust. He gasped and breathed heavily below her.

"I'm not driving you to the pharmacy tomorrow," he said with a chuckle.

"Thanks asshole," she panted, "but you don't need to. It's safe this time."

"You finally on the pill?"

"Don't worry about it," she said, breathing heavy.

"You know for an Ice Queen you sure are aggressive. You have a cigarette?" He asked. She stood up and his flaccid d**k flopped back onto his hard abs.

"I quit smoking after Thanksgiving," she said, grabbing the pillow and tossing it into his face. He gave a small laugh and then put the pillow behind his head.

************

Autumn felt a hand on her shoulder as she opened her eyes and saw her mother in front of her. She felt suddenly self-conscious and hot. The warm heat of the sauna reminded her of the surroundings. Her p***y was a tingling, having remembered the encounter from yesterday.

"Merry Christmas honey," Cara said. "I'm going to turn in. Don't stay too long."

"Merry Christmas," Autumn replied. She felt the cold air of the outside as her mother left. When she looked around the sauna, it was just her and Merlin in the wooden room. The others must have left while she was half asleep. He was sitting across from her with his eyes closed. His robe had fallen slightly open, giving her a good view of his large brown package. She stood and started to put on her robe when he stood up as well.

"Hey wait," he said. "You wanna see how hot we can get in here?" He asked with a grin as he grabbed his crotch

She stopped, considering her options. "No," she said.

"How about--"

"Not here, I'll... I'll go to your room later after a shower and everyone is asleep." Merlin nodded with a grin.

Autumn put on her sandals and walked into the frigid night. Snow was falling as she entered the house. Her sister Jocelyn came out of the bathroom, a towel over her head and her nose ring and other jewelry back on. Autumn entered for a quick shower, rinsing the sweat from her skin. She finished and ignored Merlin as she passed him in the hall. She changed into pajamas in the room with her clothes and drank a glass of water to rehydrate before leaving and going to the pull out bed, where she lay next to her sister Jocelyn who was looking into her phone. Her mother had called the owners' of the house in the morning and they had moved the sofa bed and changed the wet sheets and mattress.

Autumn lay there silently, thinking about the situation with her stepbrother. She was definitely going to f**k Merlin tonight, but she was deliberately not thinking ahead any farther than that. The s*x was just too good. She had been lying on the bed for about twenty minutes, waiting for Jocelyn to go to sleep. Her sister was still looking at social media. Jocelyn finally fell asleep about ten minutes later.

Autumn sat up and walked as quietly as she could, down the hallway towards her step-brother's room. As she got there, she saw her mother enter. Autumn approached cautiously and put her ear to the door. It wasn't very loud, but after a few minutes the sounds were unmistakable.

"Take it off, mom," Merlin said.

"Oh, Merlin," Cara replied. She didn't take it off, but she kept moving her hand, faster and faster, and the tiny lycra piece lifted and moved back and forth across the skin of her mound.

Merlin put his hands on his mom's thighs and squeezed. He pushed them back while she m*********d.

"I can see everything already, mom," Merlin said. "There's nothing to hide from me. I see your p***y through the suit. Take it off. You'll get yourself off better if you take it off."

Cara's hand kept moving between her legs. Her head was back, against the seat cushion, and her eyes were closed. She heard Merlin's words as though through a thick filter of lust and confusion. He wanted her to do something, but she was so busy rubbing herself she didn't know how to do it.

"You do it," she said. "You do it."

"O.K., Mommy," Merlin grinned.

It was easy to do. His hands went to each side of the bikini bottom, and each gave a quick tug on the string on her hip. The knot came undone on each side. Merlin pulled, and after a moment's resistance he felt her ass lift off the chair and the bikini bottom gave way to his hands. As soon as it was off her he tossed it to the side.

His step-mom's p***y lay in front of him, uncovered. Her hand never stopped rapidly massaging the little clit, and the motion caused her p***y lips to open and close in a steady rhythm, revealing pink depths that left Merlin in rapture. Merlin took her thighs in his hand, and he squeezed them, enjoying the soft, pale, freckled skin and the firm, lean muscles underneath. He held the thighs apart, so he could enjoy the view that mom's hand created.

Cara closed her eyes. She focused her attention on the pressure of her hand on her p***y. She wanted to come, whether her step son watched or not. Her fingers rubbed more and more furiously over the nub of her clit.

Merlin sat mesmerized at the sight of his mom, open legged and frantically rubbing herself. He lost track of time. His surroundings became a blur. The singular focus of his attention was his mom's p***y.

Cara felt the orgasm come on quickly, and sooner than she expected. It welled up from inside her, and her back arched. She pushed her hand down hard on her clit and her body reacted. She came.

Merlin watched, spellbound, as his step-mom's body shook and writhed over the arm chair before the bed. The lips of her p***y parted.

Cara squirted. She opened her eyes, in time to see a thick spray of clear liquid erupt from her p***y, splattering and covering Merlin's shirt. Merlin looked on without moving, bug-eyed and open-mouthed. Cara tilted her hips up and with a quick hand opened her p***y further, and the spray became a thin jet of fluid splashing over her step-son's face. His mouth, open with surprise, took some of it, and Cara watched her c*m spilling out its sides.

When the squirting stopped she still shook from the orgasm. Her legs and hips spasmed. While her body shook she held her gaze on her son, still and stunned. She wondered how he would respond.

She didn't wait long. The look on his face changed from slack and immobile to something different. He put a hand to his face, dripping with his mom's fluids. He wiped it off and put the hand to his mouth. He licked his mother's wetness off his hand. He closed his mouth and swallowed.

My step-son just swallowed my c*m, Cara thought.

When he was done licking the c*m off his hands he pushed his step-mom's legs farther apart and his face went forward. He kissed his mom's p***y, tongue out, lapping up all the wetness that coated her.

Cara closed her eyes again and moaned. It had been a long time since a man's mouth had been on her. Merlin's tongue, in its attentiveness to her body, recalled the tongue of her late husband.

Cara watched as Merlin put his mouth on her, sucking and lapping up the wetness from her orgasm on her thighs and around her p***y. She hadn't felt anything so good since John had gone. She reached a hand forward, grabbed the short hairs on Merlin's head, and held him close to her. His tongue went to work on her for several more minutes.

Eventually, Merlin pulled back.

"I'll bet your husband liked something else, too, mom," Merlin said, as he stood up and his hands went to the waistband of his shorts.

"What are you doing, Merlin?" Cara asked.

"I'm going to f**k you, mom," he said. "I've just watched you squirt and come and I've put my mouth all over your p***y, and now I need my c**k inside you."

Cara almost said something in protest. It was wrong for her step-son to talk about her this way, she thought. But in her step-son's voice she heard the echo of her husband, which her current husband could not provide her. He had talked to her that way. And she'd talked back. John and Cara had woven dirty talk into their f*****g. John had always been good at it, and Cara had gotten good at it too. They had made it a contest: who could talk dirtier and make the other come first with his or her words.

Whatever reservations she might have had minutes earlier, Cara knew now she wasn't going to stop Merlin from f*****g her. She decided then and there she wanted Merlin to know what that she thought about that. She would play with him as she had played with John.

"You want to f**k your step-mother's wet p***y?" Cara said to Merlin, almost surprising herself.

Merlin stopped, startled, and stared at his mom.

"Yes," he said. "That's what I want."

"You want to f**k me right here in the bedroom, where my kids and your father can hear us?" she asked.

"Yeah," Merlin said. "That's exactly what I want to do to you."

A moment hung in the air. Merlin and Cara knew they were on a precipice, that they were about to jump off and change things between them forever. Merlin's blue eyes and Cara's hazel eyes locked on to one another, and a lifetime of love and meaning passed between them as they readied themselves to give in to their mutual desire.

"Then you better f**k me," Cara said. She lay back against the lounge chair and she pulled her legs back, spreading them wide for Merlin.

"I'll f**k you, Mommy," Merlin said. He stood up and pulled his shirt off. Cara admired the lean muscles of his chest and shoulders. She watched his hands go to the waistband of his shorts. He pushed them down his legs. Cara saw a hard, fat c**k pop up when the shorts went down. There was no denying Merlin's excitement, because the c**k stood up straight and away from him.

Autumn could not help but get wet at what she just watched from the door. And she could not believe it either that Merlin was f*****g both the mother and daughter together.