All characters in sexual situations are 18 or older. Thanks for reading!
A pulsing glow cascaded out of the open puzzle. "What is that?" Nick stared at a black, faceted gem with red veins that was bracketed inside the cube. The veins were the source of the light.
"A weird crystal?" Alyson still held her brother's heavy dick in her hand. She squeezed it like she was holding his hand. "Do you think it's dangerous?"
"I don't know." Part of his brain urged caution. Maybe they should put the thing outside? But the rhythmic pulses of red light were mesmerizing. Nick continued to stare at it. It was fine, they had been around the puzzle for a while. "It's not dangerous."
"Yeah, probably not." Alyson leaned closer, her boobs hanging below her.
"It's pretty." Nick looked down at his dick. His sister's hand was now slowly pumping him. He could hear the wetness of their combined cum squelching in the quiet room. He hadn't lost his erection after sex, and there seemed little chance of his dick going soft anytime soon. "There's an inscription in Sumerian cuneiform." Nick pointed to a line of symbols engraved around the inside of the cube.
"The last riddle. We'll need Chris to translate." She had only planned on having sex with her brother the one time. The excuse had been to anoint the cube. But now, she needed him inside her again. She leaned forward and kissed his hard chest, her hand moving faster on his penis.
"We can't give the puzzle back to Chris." Nick let his sister push him onto his back. He could no longer see inside the puzzle, but he could see the red glow on the ceiling.
"We won't." Alyson put a finger from her free hand on his lips when she saw he was about to protest. "Shh. Don't worry so much. We'll find another way to translate it. You can help me. Sound good?" She straddled him.
Nick nodded up at her. Her hair draped over half her face. He pulled it behind her shoulder. "You're beautiful, Alyson." He read the room. She didn't have a kiss-me face. Her expression was less dreamy and wilder. Was this her fuck-me face?
"Since you already did it inside, there's no harm in doing it again." Alyson lifted her hips and placed him at her entrance. She was so sloppy that he slid right in. There was no pain at all.
"No harm? You said it was safe." He didn't want to get his sister pregnant. Worry creased his forehead.
"I said I was as safe as I get." Alyson laughed. She really should have been more concerned about... well... everything. But she felt too giddy to care. Amazing sex was a hell of a drug. "Don't fret, Nicky." She undulated on top of him, grinding their pelvises together. "'As safe as I get' is pretty safe. You know me. I wouldn't take any... uh... uh... stupid risks."
That was true. "Yeah... right..." Nick let the anxiety pass. They'd be fine. He leaned up and latched his mouth onto her nipple and drank.
"Ooohhhhhh... Nicky..." Alyson wrapped her arms around his shoulders and held him tightly to her breast. She wondered what would happen to them. She certainly couldn't go on humping her brother after she married Chris. She thought about all the time in the loops they had wasted not having sex. Why hadn't she seen what could be with her brother? She didn't understand her past, and she couldn't chart her future, but she could surrender to the moment. "Ohhhh... shit... Nicky... you're deep." And she chose to surrender completely.
They lost all track of time. Nick came inside Alyson and they barely paused. The light outside her window faded. Nick stood behind Alyson with his hands on her hips. "You're so... tight... Alyson."
"Not... ugh... anymore... I think." Alyson needed to teach him about holding her hair. That was the only thing between what he was doing and perfection. "Sometimes... Nicky... uh... uh... uh... a woman... wants you to... pull her hair."
"You want me to...?"
"Yes... yessss... please." Alyson's eyes rolled back when he bunched her hair in his hand and steadied her head. "Not... too rough... yesssss... like that... oooohhhhhhhhhhh." She slammed her ass back into him and came again.
When his sister stopped screaming, Nick thought he heard something troubling. He used all his willpower to stop his hips so their slapping skin and her squelching pussy wouldn't mask the sound. "Shit... the garage door. Mom and Dad are... home." He pulled out of her and his sister slumped to the floor.
"Oh... Nicky... I think... you've broken my... brain." She looked up at him and smiled.
"Mom and Dad... shit." Nick picked up his clothes, grabbed the puzzle, and turned to leave. He paused when his sister didn't get up. He couldn't leave her naked and leaking on the floor. He grabbed her blanket with one hand and threw it on her. "I gotta go."
"Okay." Alyson nodded but didn't move.
"Jesus." Nick wondered if he really had broken her brain. The threat of their father finding them should have been enough to light a fire under Alyson. "Put some clothes on... when you can." He left the room quickly. He could hear a door close downstairs. He darted into the bathroom and turned on the shower. He dropped his clothes and tried to close the puzzle. He found it closed, but wouldn't latch shut. A thin line of pulsing light shone through a seam in the metal. He put it on the sink and sighed. His cock was still hard and he wasn't going to put that third load in Alyson. Maybe next time. He stepped into the shower and got under the warm water. He was quickly fapping like crazy.
"You taking a shower, Nicky?" Kate's voice came through the door.
"Yes... I'll be out... in a minute." He stopped pumping.
"Okay, dinner will be ready soon. Come on down when you're finished doing... whatever you're doing in there," Kate said.
"Sure, Mom." Nick waited and listened. After a few seconds, he figured the coast was clear. He went back to fapping, imagining that his mom had joined him in the shower, and that she wanted him to pull her hair, too. He came while thinking about her round butt rippling with each impact from his hips.
~~
"What did you go shopping for?" Nick addressed the question to his mom, trying not to look at the smug smile on his father's face. He bit on a Brussels sprout and chewed. His sister, somewhat recovered from the afternoon, put her hand on his thigh under the table.
"Oh... um..." Kate's cheeks turned red. "We went clothes shopping."
"Cool, can you show me what you got after dinner?" Alyson's voice had a dreamy quality to it.
Fred laughed. "They're not the kind of clothes you can show to your kids. Right, Katie?" He raised his wineglass to his wife.
"Um... right." Kate tentatively clinked her glass against his and looked down at her food. "Sorry, Alyson."
"Oh, that's okay, Mom." Alyson looked at her brother and frowned. "I need to head back home after dinner anyway. Chris and I are going to the gym."
"You're going to the gym? That's..." Nick took a deep breath. Was God, or Enki, or whoever testing him? "That's cool that you two are working out together." He had wanted to say something about Chris controlling her. No good would have come of that. "You know what? I'm going to text Maggie Chalmers after dinner. I might even call her. I'll see if she wants to hang out after school sometime this week."
"Oh, that's nice." Kate found herself with the completely unreasonable notion that maybe Nick shouldn't date. She reminded herself that it would be healthy for her son, and probably a lot of fun to boot. What mother wouldn't want her son to date Maggie?
"Yeah, that's great, Nick." Alyson wondered at the hypocrisy of her sudden rush of jealousy. How could she be jealous of Nick when she was running back to her fiancé?
"Way to go, Nick. She's a hottie." Fred chuckled. "Don't blow it with her."
Kate hit her husband's shoulder. "Don't talk like that about eighteen-year-old girls." She swallowed hard, thinking about how much farther she'd gone with an eighteen-year-old boy than calling him a hottie. "Nick will be just fine, Fred. I saw them together at the soccer game yesterday. Maggie looked smitten."
The comment was met with awkward silence. The conversation was dominated for the rest of dinner by Fred. When dinner was over, the family quickly dispersed in different directions.
Rather than helping his mom with the dishes, Nick went upstairs to text Maggie. He spent the rest of the night in his room. It turned out that Maggie was witty and funny, and she was free to hang out after school the next day.
~~
Nick read the room the next morning as he ate breakfast. His mom was either angry with him or feeling awkward. While his dad was still upstairs, Nick decided to find out which. "Are you upset with me, Mom?"
"Goodness, no." Kate turned from the sink and regarded him. He was so handsome and full of life. She hated herself for wanting to keep him all to herself. "We can't really talk with your father home." She lowered her voice. She could hear the shower running upstairs. "I just feel bad about letting you see your father and me the other day. And..." She forced herself to smile. "That's all. I'm excited for your date with Maggie today."
"It's not a date. We're just hanging out after school."
"You should bring her by here. I'd love to say hello." Kate's jaw clenched tight. She rinsed out her bowl and put it in the dishwasher.
Nick could see the tension in her shoulders. She wasn't telling him everything. He didn't know what to do. "Yeah, we could hang out here and do some homework in my room or something." He stood and brought his plate to the sink. His mom was still bent over, fussing with the dishwasher. The shower turned off upstairs, but they still had plenty of time before Fred came down for breakfast. "Do you need anything from me, Mom?"
"No, I... oh..." She flinched when he gave her a playful slap on the butt. She stood up and turned toward him. "Look, Nicky. We have a complicated relationship to navigate right now. I totally understand if you want to back off. We can still cook together, take walks together, and talk together without... that other stuff. Maybe if we simplified... mmmmpppphhhhhhhhh." Kate melted into her son's arms when he kissed her, their tongues intertwining.
Judging from the way she kissed him back, Nick had read the room correctly. He lowered his hands to her butt and squeezed great big handfuls. She pressed up against him. There was no doubt that she could feel his hard dick pressing into her. They kissed for a couple minutes, and then he stepped back. It was best not to push his luck.
"Oh... my..." Kate put a hand over her heart. She could feel herself gushing in her panties. With a quick glance at the stairs, she tried to compose herself. "I... um... yeah... well... we shouldn't do that... should we?"
"It's okay, Mom. Dad won't be down for a little while." Nick took a deep breath. They smiled at each other like idiots. "I just want you to know how I feel. I hear things are complicated for you. That's true for me, too. But I wouldn't trade our closeness for anything."
"Thank you, Nicky." Kate's blood pressure lowered. The tension left her shoulders. She wetted her fingers with her mouth and wiped some lipstick off Nick's lips. "Can't have you going to school with your mom's lipstick on." She giggled.
