Chapter 1 - Mutual

"Has the shower gotten smaller or have we gotten bigger?"

Matt looked at Beth with confusion. Her question was a strange one, he needed a minute to answer truthfully. Staring at his girlfriend, he could see a difference in the girl he had moved in with six months ago.
Everything had become so full on in the time that followed, both of them moving into full time work since graduating, he hadn't properly focused on her features in a while.

Her dark, shoulder length hair and radiating eyes were the only thing remaining unaffected by months of takeaways and lack of home cooking or nutrition. Her face was plump, cheeks inflated, the chin now appeared more defined with the backdrop of a second, puffier chin forming below. He gazed down, noticing a growth in her arms which accumulated to a deposit of fat around her armpits. Matt's fixation however was on her breasts. Once small, perky handfuls had grown into impressive, swollen pillows. Perkiness had been substituted for mass, her rounded bosom double her breast cup since. Delving further down her inflated body, he noticed a parallel belly. Beth had never appeared concerned with her weight and had somewhat yo-yo-ed in the three years they had been together, but this was something new. Once svelt and near boney had become flabby and distended. Her ribcage was no longer visible, the bottom of her belly punctuated by a slight shadow from its overhang to her vagina. Even her pussy appeared inflated, enhancing its soft lips against her thick thighs. Though facing him straight on, Matt could see her pale, fleshy buttocks poking out from either side of her widened hips. Water dripped from the crevice where her ass joined her fleshy legs, now sporting cellulite.

It was undeniable, Beth had gained at least 45 pounds in the preceeding months. The fleeting thought of this possibility had crossed his mind but Matt had never entertained it. How would she respond if confronted by it? Was it even a problem?

"Hello? Why are you ignoring me?"

Matt must have been quiet longer than he had perceived, but he tried to respond as quick as possible.

"I think you might have put on a few pounds sweetie"
"Oh, really?" a blush fell across Beth's smiling face, "I was just thinking the same thing"
"It's not a problem, you still look gorgeous, I -"
"Not about me, about you!"

Matt fell silent, he was perplexed. Was this a joke? A plump finger jabbed his stomach and he looked down to realise, she might have been right.

Fat started to form around Beth's finger as she prodded her boyfriend playfully. It was the property of a belly where solid abs has once resided. Matt's stomach was now fluffy and distended, hairy and unshaven. Further north his chest had lost tone and poked out half as much. Jelly man boobs were beginning to form and perfectly married his gut. The worrying thing for Matt however was that below Beth's finger, he could barely see the tip of his semi erect member. It had been a long time since they showered together, but he still got the same tingle pressing up against his naked girlfriend. His hairy ass lightly dusted against the glass of the shower, making him realize how much it had grown from his work in the gym. His thighs now stuck together slightly as he took a step back and bounced in a synchronised jiggle with his lower belly.

"Wow, I guess we haven't worked out in a while, it makes sense."

They both paused as they mulled over their growing frames.

"Maybe we should go for a run tomorrow, I need to get to work."

-

The day followed as many had recently done, the couple hadn't had time to buy food for the house at the start of the week so settled for a bakery breakfast on the drive into the office. Their paths diverged once they left the house, but Beth and Matt would meet again later in the day, as they both misplaced their packed lunch in a cruel twist of fate. Matt waited in the restaurant as Beth flapped in some ten minutes late, her face reddened by the brisk walk she had taken to get there.

"So so sorry I'm late sweetie, my meeting ran over and you know what Jenny is like!"

Her apology fell on deaf ears however, Beth turned to hang her handbag over her chair as Matt gazed upon the side profile. Her distended belly had dragged her skirt up slightly to reveal a glance at her plump posterior, jutting out of the fabric that once contained it.

"It's okay, watch your skirt though" he said, smirking as he pointed at her thighs.

Beth's face fell even redder as she realised how much the skirt had risen in her short walk over to the restaurant. She sat down with a mocking sad face before glancing over the endless menu.

"I guess we're limited to the salads today after this morning's discovery" she teased, biting her lip as she locked eyes with her shocked boyfriend.

He would have been able to maintain eye contact were it not for the heaving breasts uncovered by Beth's top three buttons, or lack thereof. The pale flesh arched over her bra slightly, indicating that they had outgrown the container in the past couple of weeks. He couldn't help it anymore, he had to admit his newfound attraction.

"I don't think so honey, you always look gorgeous to me. I'm happy that there's more of you to love." Although taken slightly aback, Beth grinned uncontrollably.

"Y'know, I've been thinking about it alot this morning. I don't really want us to lose this weight. Not right now at least, I think you're a really cute chubby guy too, maybe more than you were before."
"That settles it then, burgers and chips?"

Their lack of time for lunch was more than made up for by their appetite. The main course was followed by a generously sized cheesecake each. Matt groaned as he sat back in his chair and discreetly unbuttoned his trousers and bottom shirt buttons, feeling his swollen gut fall onto his lap. What may have formerly caused humiliation became elation as Beth hand passed under the table to rub his hairy belly. Their eyes met as her hand slipped underneath the sweat accumulated under his paunch to find his cock pressing harder against his boxers. Had it not been for his heavy stomach, Matt would have been held upright by his stimulation for his growing girlfriend.

"See you later, sweetie" Beth giggled as she wiped ice cream from the side of her mouth and started walking back to work. Blue balled, Matt lolled back into his chair, patting his belly and staring at his girlfriend's slight waddle as she left into the street.

-

Beth wouldn't reply to his texts as the day progressed, not until clocking out time.

"Got to stay behind to finish off the reports. Having pizza, make sure you're full before I get home. B x"

Matt didn't need to think twice, he too fancied some pizza and picked up a 20" on his way back from work, complete with a bucket of chicken wings he knew would be far too much for him to eat after such a big lunch. He got back just in time for the football, kicking off his trousers and shoes before picking up a beer and flopping onto the sofa. It was a good game, Matt hadn't realised how fast he had gotten through the beer and wings until only a quarter of the pizza remained. Promising he'd leave it until lunch the next day he slowly fell back into the sofa, staring at the screen in a food coma before dozing off to sleep.

Beth could hear the post-match analysis as she came through the door, surprised that Matt didn't greet her after such a long day. She slipped into the living room to find her boyfriend passed out with pizza grease painting the side of his mouth. Matt stirred as she turned off the TV and approached him slowly, shaking her arms and hips inadvertently as her very own 16" pizza digested in her swollen belly.

"Wakey wakey Mr Pig" she whispered as she wiped away the food remnants on Matt's cheek. He briefly stared at his unbuttoned shirt, revealing his untamed gut protruding above his girlfriend's head as she kissed his fatty flesh.

"I haven't been able to stop thinking about you all day, sorry I was late, maybe I could make it up to you?"

Beth looked quizzingly at her boyfriend as she wrapped her flabby arms around his neck and began to squat down onto his fully erect member. His hands slipped under her skirt to feel her soggy thong which ripped off with ease. Beth pulled her skirt up under her breasts to reveal a heaving belly which almost sat upon Matt's own in the dim lighting of their living room. She leaned into to kiss him before slipping her hips down onto his throbbing cock. He moaned slightly not just by the warmth of her curvy body, but the weight it pressed down onto his thighs with. Beth panted as she struggled to maintain a riding tempo with her fattened hips, her overhanging paunch smacking gently upon Matt's distended gut as she felt the thrill of riding her new pig. She lifted her head and liberated her tits from the shackles of her ill fitting bra and they bounced slightly in the rhythm of their passion. Her hand eased from the back of his neck to slide down and squeeze his flabby chest, holding onto his new moobs with pride and eroticism. She could no longer contain an almighty cry and she orgasmed upon her fat boyfriend. Matt felt the contortions of his girlfriend's vagina squeeze upon his own head, forcing him into a violent orgasm. He jolted upright to be met by his soft lover, embracing her in a hug as he dragged her down onto the sofa with him.

They lay in silence, still out of breath from the most strenuous exercise they'd experienced in months, beads of sweat glistening from their flabby, softened bodies. Beth rolled her head to meet Matt in the eyes and smirked profusely.

"Fancy a bowl of ice cream?"