"I haven't been with a woman for a while." Paul confessed
"Must be lonely up there in space, do they allow you porn?" she asked
"Porn ain't the real thing."
"So true." Marcy agreed.
She reached for the straps of her dress and flicked them casually off of her shoulders. Letting gravity do the work for her. The material raced down her body and pooled around her feet as she stepped out of it and kicked off her heels.
"Oh my God! Look at that body. I'm not going to last long."
"We have all night."
"Save some for me." Raquel purred from the armchair.
They made out some, with him ending up on top of Marcy. Testing the limits of his new powers, seeing how much power was too much or too little. He could pop her head off like a zit, but that would expose him to destruction like the Martians had forced upon the Parasite.
"I don't have condoms."
"It doesn't matter, you wouldn't be allowed to go to Mars if you had a disease or something.
Inside Paul the Parasite laughed with delight.
Marcy guided him into her, she was already moist so he slid into her as if they had been together for years. The walls of her vagina closing on his penis. This moment was what the Parasite had waited four billion years and traveled 140 million miles to get. Sliding seamlessly into her he began pumping and they started developing a rhythm. Paul thrust and Marcy bucked her hips.
Marcy felt him inside her, he was very large. It reminded her of one time she fucked a black man. His penis seemed larger than her mind had imagined inside her. Apart from a slight irregular breathing he wasn't making noise, which was not normal for any other man she had fucked.
Marcy was started to sweat as she found Paul was putting more and more pressure on her, like a gradual tightening of pressure. She founded her head was being banged into the headboard and her ass had gone numb. So had her left leg as Paul started to pound away at her pussy. She grabbed him as he pressed his weight onto her, making the bed squeal in protest at the way in which the bed was being used.
"What the fuck?" she panted
"I thought you were going to last very long..."
Paul still said nothing, looking blank, but something grabbed her nipples and squeezed it hard. She both gasped and moaned. Paul then started really nailing her. She felt his hands grab her by the hips and impale her on his cock like a spear.
"Ugh" Marcy groaned.
Paul still said nothing.
"Ah-Oh" she moaned
Paul's breathing increased slightly, he was pumping faster.
Marcy could feel her orgasm building up, but he was playing her. Going from some virgin who would blow his load onto her tits to some kind of porn star.
"God!" she almost shouted, trying to hold back her own noisy nature.
She didn't want Rachel to think that she was weak, her sister had to know her place.
Paul knew her place, she was his bitch and so was the other one.
He thrust harder into her, pinning her to the bed with each thrust.
"Oh shit, Oh fuck..." she wailed.
He was pumping harder.
Rachel was draped on the armchair watching the first Martian and her sister fucking. Marcy had always been so tall and so much better looking. Now she was enjoying watching her sister get fucked by a real man. His chiseled body rippled with muscle as he pounded her half sister into the bed. Only Marcy's long legs could be seen either side of his nude ass and what an ass. This was a real man and Rachel knew this: Marcy's next modelling job would be in maternity wear.
Paul seemed to come back to himself.
"Arg God-" Marcy started
"-G-O-D!" Paul roared.
Marcy waited for Paul to cum but he didn't.
He seemed to look like he was unable to come. The human part of him wanted to cum inside her, the alien half of him kept him from doing so, she wasn't ready.
So he kept fucking her.
Marcy had climaxed, she wanted this nightmare to end. Why wouldn't he cum?
She was gripping onto him, her arms and legs the only part of her body that was free. He was still nailing her to the bed, the springs squeaking in protest. Paul was pressing deeper into her, right up to the point where he would start hurting her. Her legs were wide open, knees on the mattress, as he continued pumping into her.
Rachel was looking at them confused, was he impotent? Was this some kind of sex act she hadn't heard of before? She looked board.
Marcy was broken. Paul was still pumping into her, somehow he had made his mind blank and put of ejaculating. All she could manage was a broken "ugh...ugh...ugh" as Paul had his way with her.
The human side was now allowed to take over and Paul loosened his grip on the woman, she was finished.
"Ah...God..." Marcy panted in relief.
"GOD!" Paul roared.
He wasn't thrusting anymore but he was inside her went he started pumping seed into her. Marcy was exhausted and wanted off this ride. The sudden burst of semen hit her hard, leaving her gasping like a landed fish. Her head thrown back with something akin to relief, her left hand gripping the sheets, her right hand scratching his back hard enough to draw blood.
She was wideyed and paralyzed by what he had put her through. The seed he was pumping into her was finding parts of her body that she never knew existed. At the back of Marcy's mind was this thought: he has just put a baby in me and that baby will leave the same way.
Paul went for a full minute, the whole process had taken about five minutes but felt like a marathon for Marcy. The tip of his penis became like the tip of a spear, if either of them tried to pull over it would cut her insides.
Slowly the flow of sperm backed off and she started to come back to herself he burst again into her.
"Uuuggghhh!" she groaned
Finally sure that he had finished, she expected to find the sticky stuff dripping out of her vagina.
Then he would cum again, even stronger than last time. The Parasite was keeping the woman off balance, lowering her resistance to make her fall pregnant no matter what happened.
The human side of Paul took over. He was looking down at this dark haired woman and thought: you aren't the woman I love. As he was trying to figure out how he had ended up here Marcy wanted out of this bed.
"You are a hero." she panted.
Paul looked confused to her and she had to tap him on the back to get him to move. He slowly rolled off of her, his cock was still hard and he took her with him.
"Oh God" she moaned.
Her C cup breasts bounced back to their normal size after being pressed flat against the slab of Paul's chest. Her right leg was wrapped around his waist while her left felt numb, crushed under his mass. As she tried to get up the pillow stuck to her hair, which was a wreck, plastered with sweat. As she slowly pulled his cock out of her (which make her groan with the effort) she felt sore and stiff. Her left butt cheek had an ugly purple bruise on it, as did her lower back. Her right ass cheek had something like a bad carpet burn that looked bloody.
As he collapsed onto his back he seemed drugged, she wasn't sure what had happened but it wasn't normal. However her higher thinking had been fucked out of her brains. Trying to make the edge of the bed she wanted to sort herself out before Rachel could see her being weak. Marcy left her black slip of a dress and reached for pink stain bathrobe. She leaned her head back and tried to let gravity sort out the mess that was her hair. Her tits wobbled with her movement as she struggled to keep her eyes open. Her busy pubic mound was on display
Rachel came up to her using the post of the bed like a stripper would.
"It's my turn." she purred at her sister.
Marcy couldn't think straight, pulling on a bathrobe was basic stuff and she was stuffing it up. Rachel could see she was broken. Rachel went to stroke her sister's hair, Marcy moaned in discomfort.
Paul stirred behind them. The human side wanted to hurt himself for cheating on the woman that he loved, but the alien washed way thoughts of loving one woman. He was the future of the human race, they were just test subjects.
"Yes..." he said reaching for Rachel's breast and pulling her slip of a dress down.
"...it is."
"Huh?" Marcy said.
She could see his cock, it was larger than any she had seen before. The tip had bulged more than she could ever remember. It reminded her of the tip of a fishing hook, designed to lodge itself inside her. The hook like bulge then smoothed out. Had he done her damage insides? Marcy was also offended that he didn't even look at her toned, nude body, it was as if she had become invisible or forgotten by this man. She wanted to warn Rachel not to let this monster inside, something was wrong with this threesome. But then her mind was blanked by a sudden feeling of loathing for her younger half sister.
Feeling as if she had no place there she turned for the bathroom, unable to pull on the robe she got it up to her elbows and left. The fabric trailing behind her like a cape.