This is a work of fiction. All of the characters, organizations, and events portrayed in this novel are either products of the author’s imagination or are used fictitiously.

First published in the United States by St. Martin’s Press, an imprint of St. Martin’s Publishing Group

TWENTY-ONE TRUTHS ABOUT LOVE. Copyright © 2019 by Matthew Dicks. All rights reserved. For information, address St. Martin’s Publishing Group, 120 Broadway, New York, NY 10271.

Lyrics from “Code Monkey” copyright © 2006 by Jonathan Coulton

www.stmartins.com

Cover design by Kerri Resnick

Cover illustration © Bibadash/Shutterstock.com

The Library of Congress Cataloging-in-Publication Data is available upon request.

ISBN 978-1-250-10348-2 (hardcover)

ISBN 978-1-250-10349-9 (ebook)

eISBN 9781250103499

Our ebooks may be purchased in bulk for promotional, educational, or business use. Please contact the Macmillan Corporate and Premium Sales Department at 1-800-221-7945, extension 5442, or by email at MacmillanSpecialMarkets@macmillan.com.

First Edition: November 2019