And when Virginia meets Sebastian, who has his own issues and secrets, everything gets complicated even further.

So Mackler got permission to crawl back into her earlier book and make a few tweaks.

The Universe Is Expanding and So Am Ihits shelves May 29, 2018.

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BLOOMSBURY

The first one I read wasThe Earth, My Butt, and Other Big Round Things.

And look where that led us!

CAROLYN MACKLER:To this interview right now?

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Bloomsbury

And to co-writingThe Future of Us.

(Actually, thats what I really meant.)

Tell me about that, yo.

MACKLER:Did you just say yo?

ASHER:I sure did, yo!

MACKLER:A few years ago, an idea came to me about Virginia Shreves.

I knew it would take place the summer after her brother was kicked out of college.

But Virginia and her new story kept coming back to me until I could no longer resist.

ASHER:How do you even go about writing a sequel after so many years?

ASHER:What about modernizingThe Earth, My Butt, and Other Big Round Things?

I mean, I do think its kind of cool.

MACKLER:Yeah I could do it… because we make the rules, right?

ASHER:Well, thatiswhat fiction writers do.

For example, in the new book, Virginia has a phone.

So I went back into the original book and put a phone in her hands now and then.

Important stuff like that.

I didnt change anything big or plotty or structural.

ASHER:Now I want a Hostess Cupcake!

So I love the covers of both books and the way they work together.

Bloomsbury did an amazing job with them all the splashy colors and circles!

I cant wait to see them out in the world.

ASHER:Of course, now that youve written a sequel, you need a prequel.

But set it way back in time.

I even have a title!

Ready for this?The Earth, My Chest, and Other Very Flat Things.

MACKLER:I seriously dont even know how to answer that.

ASHER:Maybe… yo?