Chapter 1
"Oh come on Jason!" laughed Eve Tudor, reaching out a hand to playfully ruffle her boyfriend's hair, "you know that I'm just messing with you when I say that kind of stuff." She had just brought up the fact that she had graduated from high school with a perfect 4.0, while Jason, while maintaining a respectable 3.7, was really nowhere near her. Her little tease had caught him a bit off guard, and he hadn't been able to hide the indignation on his face. He had tried as hard as he could in school, but math had always been a sore subject -- Eve, on the other hand, was just one of those people who coasted through school, acing everything seemingly without effort. In reality, Eve studied very hard.
"I--I know," said Jason, who was smiling despite his initial reaction. He puffed up his chest and made a show of mock masculinity, flexing his impressive muscles. "Besides, if I was better than you in school, you'd have nothing to hold over me."
"Oh, on the contrary," said Eve, walking up and standing over him. She stared down into his eyes. "It looks to me like I'd have plenty to hold over you." Jason looked up into his girlfriend's pretty brown eyes. Her face was framed by gentle waves of chestnut brown hair. He had to give it to her on this one -- at 6'1, Eve stood a good 5 inches taller than Jason, who at 5'8 was by no means short. It was true that such a height disparity was unusual, but the two of them had been dating for 2 years now, ever since sophomore year, and they hardly thought anything of it anymore. It helped that Jason was no slouch himself when it came to his physique: even though he was a tad shorter than average, what he lacked in height he made up for in brawn. He was an all-state wrestler in the 170-pound class.
He looked straight forward into the elegant white curve of Eve's neck. Then he averted his eyes up slightly to her red lips, which were pursed in simulated seriousness. Jason couldn't hold it in any longer and smiled; he looked up into Eve's eyes again, which sparkled playfully. He loved this girl -- he suddenly reached around her back, seized her in an aggressive embrace, and lifted her up off the ground.
"Ohhhh!" said Eve, caught by surprise as her boyfriend spun her around. She loved when he did this; even though Eve stood much taller than him, she liked to be reminded that he could effortlessly sling her around and do what he wanted with her physically. For the state champion wrestler, picking up Eve like this was no problem -- she was quite thin, weighing only 142 pounds.
"I know you'll always be above me, baby," said Jason, looking up at Eve as he continued to hold her aloft. "And I'm totally cool with that -- it's only proper for a queen to sit higher than her king, after all."
"Oh stop it," laughed Eve as she waved her hand dismissively, "you're so silly!" But Jason could see her blushing even as she spoke, and he warmed inside. He knew that she loved it when he talked this way -- even though Eve was unquestionably progressive and forward-thinking, there was no denying that she appreciated the traditional gender roles that their relationship upheld. As she looked down at her boyfriend, and felt his strong arms around her waist, and saw the teasing confidence in his blue eyes, she felt pleasant tingles go through her body. They reverberated in her pussy: she was turned on by masculine displays like this. Even though she definitely thought of herself as a "strong independent woman," the fact remained that what turned her on in a guy were confidence, swagger, and...well, muscles. And Jason had all of that -- plus, he was super smart, although perhaps not the academic savant she was.
Jason caught her blushing. Their eyes met; their eyebrows went up. A minute later Eve was on her hands and knees, clutching onto her bedsheets as Jason penetrated her from behind. She gritted her teeth as she felt his sizable cock slide in and out of her lubricated pussy. He was thicker than average, and a few months ago Eve had made a sexy show of measuring his length. He was a little over 8 inches. Upon learning this information Eve had pushed him down onto the bed and jumped straight on his dick, riding him like a cowgirl. She didn't usually get on top during sex (as she preferred to bottom), but receiving physical confirmation that her boyfriend's cock was over 8 inches long had made her especially lusty.
Back in the present, Eve shut her eyes as Jason went roughly into her, then out, in, then out, in a steady and deliberate rhythm. He was holding onto her hips as he speared her from behind, and each time he went in he saw the gentle contours of her ass flesh jiggle and ripple sexily. Eve was pretty skinny...there was no doubt about that. She moved like a deer, with long thin limbs that gave her an unmistakable gracefulness and regality. Still though, ever since they graduated a few months ago, Jason had noticed Eve getting...a little bigger in certain areas. Her previous A-cup tits had gotten bigger, so much so that she had actually ascended to a B-cup. Her skinny jeans were looking a little tighter on her these days, indicating that her thighs had thickened a bit. But more than anything, it seemed that her hips had gotten fleshier, and her ass had gotten bigger. Like, noticeably bigger...more than any other part of her body. Throughout high school Eve had sported a relatively flat ass, to go along with her small tits. Her hips had always been fairly wide, but they hadn't had a lot of extra flesh to pad them. These past few months, however, all that was beginning to change.
Jason wasn't complaining. He bit his lip as he honed in on how each one of his thrusts sent Eve's ass into a rhythmic dance. While he was definitely under the impression that he liked his girls thin, in recent weeks he had caught himself staring at his girlfriend's expanding ass. He even had to shut his eyes and shake his head a few times to snap himself out of the mini-trance he would go into whenever Eve was walking in front of him and her ass cheeks jiggled up and down with each step. Aside from his obvious attraction to these new developments, Jason didn't really think much of Eve's growth. It was only natural for girls to fill out a little bit after high school -- there was nothing odd or out of place about that. And as he looked down at her ass shaking and bouncing on his dick, he couldn't help but chuckle to himself. What, was he going to complain that his girlfriend was getting curvier?
He gave her wobbling ass a hearty smack, eliciting an aroused moan from Eve as she backed up harder and harder into his dick. His pace became more and more feverish, and a minute or so later he ejaculated inside her, into the magnum condom he was wearing.
"You know," said Jason, a little bit later as they were basking in the afterglow of their lovemaking, "I can tell you've gotten a little thicker recently."
"Aww, you can tell?" asked Eve in a parody of disappointment. She sat up on her bed and faced her boyfriend. "Is it really that obvious?" She reached down and clutched the flesh on either side of her hips. There was enough there to fill her hands.
"I mean...kinda," said Jason. "Especially...uh, I mean...your ass is definitely bigger."
"Oh yeah?" asked Eve, turning around and looking back at it. "You're sure?"
"Oh yeah," laughed Jason, "I'm pretty damn sure, Eve. I mean, I look at it all the time -- so I should know."
"You perv," teased Eve. But she looked back at herself and then turned her back to him so that her full naked ass was on display. 'Yeah,' thought Jason, 'especially from this angle, with her kneeling on the bed and everything...it's definitely bigger.' She twitched her ass cheeks up and down a little, and there was ample flesh enough for the motion to be obvious.
"You think I'm getting too big, Jason?" she asked seriously, turning her head around and looking at him.
"No way, babe," he said, smiling as he enjoyed the view. "You're just looking more and more like a woman. I actually used to think that you were too skinny, you know."
"What?" she asked, whipping around irately, "what are you talking about?"
Jason laughed, enjoying the rise he was getting out of her. "Come on babe, just a few months ago you were all skin and bones."
"Like hell I was!" said Eve animatedly. "You're just insecure because I'm bigger than you now in some areas!"
"Oh yeah?" said Jason, still smiling, "like what?"
