They’d shared a womb together, gone through childhood as each other’s best friend, and they’d each lost their virginity to one another.
She was worried about pregnancy, about their unnatural relationship. He was worried about neither, frankly. Not even about getting rescued. He wanted her, he wanted a special relationship with her, and though he couldn’t quite articulate what that was just yet, he wanted it bad.
With his hand clutching her breast tight, he brought his other hand down, hooked his finger into her panties and tugged them aside. They hadn’t made love since their first time on the beach, and he’d been dying to repeat it. His thickly throbbing cock, tanned to an almost even hue with the rest of him, pressed against her folds, bare and unfiltered.
She whimpered and for a moment he thought she was going to protest, to try to push him off again, but instead her green eyes focused on his, filled with pleading. He knew what she wanted–or rather didn’t want–but she wasn’t going to say no to that. To his cock.
Not with how wet she was, how hard she was throbbing against him.
“It’s all gonna be okay,” he reassured her in his smooth, even tone. In so short a time he’d begun to seem so much stronger, more in control. He pushed himself into her, that bulging crown, so wide and thick, taking a moments pressure to pop inside her wet quim, causing him to sigh with relief at the feel of her wet canal.
Zach shivered from it in fact, almost lost himself then and there. For though it’d barely been over a day since last he had her, he was only freshly experienced with sex, and his hunger for it had not diminished. Not in the slightest.
“Fuck sis, you feel so good,” he husked, his eyes shutting as he held himself with one palm in the sand, the other on her tit as he pulled back his hips and thrust in.
She whimpered, her body still so tight against his organ, and she swallowed hard. “Zach,” she whispered, but his name was like sweet honey on her tongue. Tears threatened her eyes, but it was impossible to tell if it was shame or love burning them.
He should’ve pulled out then and there, for she felt so good, and his cock was on fire with the sensations. He felt as if he could pop at any given moment, but she felt so good that stopping was the last thing he ever cared to do.
Instead he only pulled back and continued to pump his impressive girth into her, again and again. His heavy sac slapping against her as he built up speed, groaning into the night air. He’d never felt so in control, so powerful as when he was riding atop his sister, his cock buried deep inside her pussy. It instilled him with such a sense of masculinity, as if all the world were his and he could control it, despite being shipwrecked upon this lonesome island.
“Yeah,” he husked darkly, his voice having taken on such a harsh edge as the thrusts came harder into her. “Take it,” he insisted, clutching her tit tighter.
She smiled beneath him and her eyes danced with humour, as if she were going to laugh at him, but she bit down on her lip to suppress it. Her eyes closed and that brief rub on some secreted away part of herself made her moan, her amusement lost. “Ah!’
He hadn’t noticed, for he was so lost in his own pleasure. The mounting sensation as it tingled up through his loins. He was master of everything, he felt, and with the way he pounded into her on the beach nothing seemed like it could topple him from his high.
His sac tightened against him, and the fire shot up his shaft. Thoughts of pulling out were the furthest thing from his mind then, he had to ride it out–ride her–to the very last, milk it for every last moment inside her. This was the way it was meant to be, he thought as he moaned lewdly. His cock swelled thickly in her as it disgorged the first thick, virile strand of seed into her waiting quim, followed fast by another on the next rough thrust.
“Zach!” she gasped, distracted from her own pleasure as she pushed her hand against his chest. “Zach, I said not to!” She squirmed beneath him, but already she felt that warmth flooding into her, and panic made her heart race.
They were both fit and strong, but he was stronger, and he resisted her push a moment more as another gush of his seed flooded her. He gave way then, and as he pulled back he spurt the last of his release upon her panties and cunt. “Dammit,” he cursed, though it wasn’t at his failure, it was at the special moment–his personal high–being spoiled.
He fell back onto his ass and one hand, rubbed a palm over his hair and looked to her, his face contorted in consternation.
She looked so hurt and betrayed, her lower lip trembling before she stood up, taking off into the dark water, half dressed.
“Fuck,” he cursed, and rose up, manhood glistening. “I’m sorry, Zahra!” he called out. He followed after her to the edge of the ocean, “You just felt so good, I didn’t realize...” and it was partially true. He was riding such a high he’d forgotten all else by that point.
“It’s dangerous, Zach!” she shouted back as she washed herself free of his taint, though it was a long shot. Even she knew that, and when she walked back onto the beach she looked so small. “Fuck, childbirth can kill you if you’re not in a hospital. Even if you are! I had a teacher that almost died ‘cause she lost so much blood.” Her arms wrapped around him and she was sobbing against his naked body, her breasts still exposed. “I don’t wanna die out here.”
It broke his heart to see her like that, and he put his arms about her, held her wet form tight. He didn’t know what to say for a while, but finally he murmured reassuringly, “It’s okay, sis. We’re invincible,” and he sounded like he believed it as he clung to her. “I’ll never let anything happen to you. No matter what occurs,” he said, giving a kiss to the side of her head and squeezing oh so tight.
She squeezed him back and he knew he was already forgiven. Maybe she hadn’t even been truly mad at him, just at the situation. At the fear that she’d let creep into her life for the past day.
Maybe she had something she wanted to live for now.
Her nails were biting into his strong, tanned back and she kissed his neck so gingerly.
“It’s all gonna be alright,” he husked so deep and reassuringly, rubbing her back and turning her towards their little hut on the beach. “I’ll take care of you to the end of time,” he swore, kissing her head as he took her back.
The next day began with great enthusiasm on his part. Zach couldn’t wait to guide her to their new home, and as they slept together, he woke up and put his arm around her, spooned into her backside. He was hard, as he always was when he awoke, and he clung to her tight as he suckled her neck and ground against her ass.
It was still a period of adjustment for her, and for a moment her body stiffened until she slowly relaxed, realizing it was him. “Hey,” she murmured, her voice still groggy with sleep. “What’s gotten into you?”
“I love you,” he said plainly, as if it were the most obvious thing ever. “And we’ve got the rest of our lives together,” he said, that thick pole wedged between her two ass cheeks with her panties. “Gets me hard thinkin’ of it,” he growled, his hand finding her breast, squeezed it through the gold material.
They’d been shipwrecked for months, and yet their relationship was so new and strange to her. She didn’t know what to expect, but somehow, he’d changed. He wasn’t the sweet man who sheepishly confessed to her that he had feelings. Instead, he was confident, and she knew her approval, her returned love had opened that floodgate.