"No!" Justin immediately protested. "At least... not technically."
"Not technically?" Alex moved closer, curious now. "What did you do?"
"Well, you were... it was... she was...." Justin stopped, put his head in his hands, shook it slowly. "Okay. Let's call it her. Does that work?"
"Sure. What did you do to her?"
"I was watching her there," Justin started, "and she looked so beautiful. Just like you. So... I was feeling horny, but I didn't want to wake you -- her up, so I...."
He paused again, and Alex picked up his pillow, hit him with it, grinning. "Tell me! I'm not going to be mad, okay? You thought it -- she was me. And she kind of is, I guess. Like a clone, if clones were really dumb."
"Okay. I..." Justin's voice dropped to just above a whisper, and he blushed again. "I jacked off onto her."
"What?" Alex's eyes went wide, and she covered her mouth and started laughing. "Oh my God! Justin!"
"It's not my fault you look so hot when you're asleep," he mumbled as Alex kept laughing, and his blush grew stronger.
"It's okay," she said then, moving against Justin and hugging him. "In fact, it's kind of cool, knowing I can make you that horny just lying there asleep." She moved against him, put her hand between Justin's legs, felt for him. "Mmm... do I make you horny when I'm awake too?"
"You know you do," he answered, then put a hand on Alex's cheek, turned her face to his and kissed her. He kept it a surface kiss to start with, pulling at her lips with his and touching them with the tip of his tongue. Justin's hands moved to Alex's waist, and he lay them down onto the bed again, moving slowly so he wouldn't have to break the kiss.
Once they were lying down, he let his hands roam across his little sister's body, feeling the curve of her hips, the swell of her breasts, the long graceful lines of her neck. Her hand was still on him, feeling him through his boxers, and then she moved it, sliding it inside to touch him directly.
Alex broke the kiss and grinned up at her brother. "That feels nice. But I bet it would feel better somewhere else." She moved her hands again, pulled his boxers down.
"Oh, really? You have any ideas about that?"
"No," she answered, giving him an innocent look. "No ideas at all."
"Well, I suppose I'll just have to show you where it goes." Justin stood up off the bed, pulled Alex's pants and panties the rest of the way off, cast them onto the floor. "Take off your top," he said then. "I want you naked."
She shook her head 'no', smiling at him, and he smiled back. "No?" Justin reached down, gave Alex's butt a single smack. "I think you're forgetting who's in charge here," he said, then spanked her twice more. "Now get that top off."
"Mmmm... you're so mean." There was a purr in Alex's voice as she said it, though, and she took her top off, then started to unhook her bra. As she did, Justin spanked her again.
"You're so mean, what?"
"You're so mean, sir," Alex said this time, letting her bra drop to the floor. They were both naked now, Alex lying on the bed, Justin standing over her with his erection jutting out. He placed a hand on one of Alex's breasts and squeezed it, while his other touched her between the legs, stroking up and down.
He smiled and stroked her a little more before speaking. "I think this is what I want right now." Justin moved down, getting his hips on level with Alex's, then entered her, causing her to gasp. He pushed himself in as deeply as he could, then grasped Alex's hips and lifted her up, standing straight up as he did. Without a word, he began to jackhammer down into Alex.
Alex moaned. The position was a little uncomfortable, and Justin was pushing in deeply enough and hard enough that she knew she'd be sore later, but right now, it felt oh so good... and she always loved it when Justin manhandled her, so that was an extra bonus.
After a couple of minutes of that, Justin pulled out of Alex, turned her over, lifted her hips again, and reinserted, then began to ride her hard doggy-style, reaching one hand up onto her shoulder, pulling her back against his thrusts. Alex moaned again and shivered as she came, the change in sensations pushing her over the edge. Justin could feel her contracting around him and grinned, but wasn't close enough yet himself.
He gave her a spank while still pumping in her, then another and another, and Alex came for her second time, grabbing onto the sheets and gasping. This was bigger than her first one, and she shut her eyes, riding through the waves of sensation. God... who would have ever thought that Justin could make me come and come like this?
They continued in that position for a few more minutes, and then Justin turned her over again, moved her so she was on the bed lengthwise, and joined her on it. He spread his sister's legs with her willing cooperation, mounted her again and began to pump, then lowered his face to hers and kissed her deeply, pushing his tongue into her mouth. He could feel himself getting close now, and he pumped faster. That drove Alex into another orgasm, and she made noises into the kiss, and clutched at him as he pounded into her with all the force and speed he could muster.
And then Justin was coming, moaning as well, his thrusts becoming jerky with it. He went on for perhaps half a dozen more thrusts, then slowed, stopped after a couple more. His kiss became more gentle, and then he broke it, started to kiss all over Alex's face. "I love you," he said, and Alex hugged him.
"I love you too. Even when you're trying to break me."
"Sorry... was I too rough there?" Justin pulled his face back to look Alex in the eyes.
"It's okay. It felt good -- I'm just going to be sore later. But I don't mind," she added quickly, touching his face now with her fingertips, smiling and looking back at him.
"Okay. Well, I hate to do this, but..." He pulled out of her, then, then moved and lay down beside her.
It was then that Alex realized something. He hadn't had a condom on. Okay, don't panic. Your period was... she paused, mentally counting back, then felt relieved. Twenty-three days ago. It's probably safe.
"Are you okay?" Justin asked, seeing that Alex was thinking about something. He stroked her chest and belly gently, kissed her on the shoulder.
"Yeah. I love you," she said again, and turned on her side, hugged him. Justin returned the hug, squeezing her a bit, but trying not to squeeze too hard, kissed her again on the mouth. He pulled back to look at her again, then, brushed hair that was falling into her face to the side. "I love you too. I could just look at you all night, you're so beautiful."
She smiled at that, ran her hand across his arm a few times. "You say the sweetest things." She kissed him, this time, and then looked past him at the clock. 2:01. "I was going to head back in about two hours. Do you want to sleep, or are you ready for round two. Or is that three, for you? Oh, hey -- we could get my duplicate and have a threesome," she teased, smiling. "Do you like that idea?"
"I'm not sure I could handle two of you," Justin chuckled. "But I'll keep the idea in mind."
"Oh, I'm sure you will. Perv."
"Perv? You're the one who suggested it." Justin smiled, kissed Alex on the tip of her nose, quickly. "I think you're the real perv around here. I just do what I need to to make you happy."
Alex snuggled in against Justin more and grinned. "Mmmm... you always make me happy, Justin. You always have."
"Good." He kissed her again, on the cheek this time, wrapped his arms around her and held her firmly, feeling the rise and fall of her breathing against him.