Beck dialed up Brianna's number into their phone. "Hi, Bri!" she said when it answered. "I've been thinking of you since the pack meeting."
"I've been thinking of you, too," Brianna said into her phone. "I can't wait until you take me in your strong, amazon arms again."
"About that..." Beck began, "...errr... uh... how would you feel if those strong, amazon arms had a nice layer of blubber wrapped around their muscles, and if they were pulling to towards a soft, cushiony potbelly?"
"Is this about Ellie Rubenstein?" asked Brianna. "Don't worry, I'd never cheat on you with her. This relationship'll be as exclusive as you want it to be, and not one bit less. I promise."
Beck laughed. "I'm a bit jealous of Ellie, yeah, but not in the way you think. I want to look like she used to, like she will again once she gets going with her sumo training. I want... I want to be chubby. I want a potbelly. I want fleshy, rubenesque arms and legs. I want big, pendulous boobs, and an ass that looks like it's made of Jell-O. Not because I think you're attracted to Ellie, mind you, It's because I really like the idea of how all that pudge would look and feel on me. You don't think that's weird, right?"
"Of course it isn't weird, babe," Brianna's voice said soothingly into the phone. "Lots of people are into that kind of thing. There's whole camgirl channels dedicated to gaining. To be honest... I used to follow a couple of them."
A grin split Beck's face. "Really, Bri? Big girls (and enbies) get you horny?"
"Yeah," said Brianna. "I started getting into it when I discovered a camgirl called jellyvixen698. I was captivated by the way her tummy moved, the way it shook and jiggled. I tried to convice myself these feelings weren't sexual since I wasn't comfortable admitting I was attracted to female bodies (especially not ones mainstream society was telling me were objectively ugly), but now there's not doubt: potbellies are smoking hot!"
"And you'd like me with one?" Beck asked hopefully.
Brianna's voice over the phone dripped with lust. "Babe, if you had a jelly belly, I don't know how I'd ever be able to tear myself away from fucking you."
"Well then," Beck smiled. "As soon as Ellie's established in Kyoto, I'll see what I can do to have us join her there."
"Us?" asked Brianna. "I think I prefer chub on other girls more than on my own body, babe. I don't plan on fattening up myself."
"I meant like how Harper's going with Ellie to keep her company," Beck clarified. "You wouldn't have to gain if you don't want to. Feel free to just appreciate all the fat herms surrounding you... especially me."
"Oh, I get it now," said Brianna. "Yes, that sounds like an experience I'd love to have, to be immersed in a fascinating new country with you as you grow rounder and softer every day. It'd be a real adventure!"
"Glad you like it," said Beck. "Just wanted to be sure you'd be fine with my lifestyle change. Bye, honey."
"Bye, babe!" said Brianna. "Lookin' forward to the new you. Heh, first a werehyena and now this!"
Beck smiled as they hung up the phone. That had gone perfectly. Not only was Brianna okay with Beck plumping up, she was super into it! They couldn't wait go get the body both they and Brianna craved.