The E.M.M.A. Effect: A Novel
Jane Austen meets Ali Hazelwood in this steamy, friends-to-lovers, STEM rom-com! He’s her best friend’s little brother and NHL forward. She’s a computer scientist used to being in control. The E.M.M.A., her elite AI training program, claims optimizing his performance requires one thing: the perfect match. According to its calculations, that’s her… Will Harriet discover that The E.M.M.A. knows best?

Harriet Smythe’s AI was supposed to create sports legends—not encourage her crush on her best friend’s totally off-limits, hot younger brother. But when funding runs dry, she has no choice but to enlist Gale Knight as her test subject. The same Gale she’s been secretly crushing on for years. The player who follows her every instruction with a knowing smirk that threatens to short-circuit her carefully maintained system.

Everything changes when The E.M.M.A. determines that finding Gale’s perfect match is essential to his peak performance. Even worse? According to its data, that match is Harriet.

Determined to keep things professional, she makes it search for new candidates. But as Gale dutifully endures awkward outings with pop stars and athletes, the chemistry between them only intensifies. And his willing cooperation during their sessions definitely isn’t helping her stay focused.

With her deadline approaching and The E.M.M.A. still playing cupid, Harriet must choose: trust in pure logic, or admit that sometimes taking control means letting go.

Maybe The E.M.M.A. knows something they don’t—even if they’re not ready to compute it yet.

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The E.M.M.A. Effect: A Novel
Jane Austen meets Ali Hazelwood in this steamy, friends-to-lovers, STEM rom-com! He’s her best friend’s little brother and NHL forward. She’s a computer scientist used to being in control. The E.M.M.A., her elite AI training program, claims optimizing his performance requires one thing: the perfect match. According to its calculations, that’s her… Will Harriet discover that The E.M.M.A. knows best?

Harriet Smythe’s AI was supposed to create sports legends—not encourage her crush on her best friend’s totally off-limits, hot younger brother. But when funding runs dry, she has no choice but to enlist Gale Knight as her test subject. The same Gale she’s been secretly crushing on for years. The player who follows her every instruction with a knowing smirk that threatens to short-circuit her carefully maintained system.

Everything changes when The E.M.M.A. determines that finding Gale’s perfect match is essential to his peak performance. Even worse? According to its data, that match is Harriet.

Determined to keep things professional, she makes it search for new candidates. But as Gale dutifully endures awkward outings with pop stars and athletes, the chemistry between them only intensifies. And his willing cooperation during their sessions definitely isn’t helping her stay focused.

With her deadline approaching and The E.M.M.A. still playing cupid, Harriet must choose: trust in pure logic, or admit that sometimes taking control means letting go.

Maybe The E.M.M.A. knows something they don’t—even if they’re not ready to compute it yet.

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The E.M.M.A. Effect: A Novel

The E.M.M.A. Effect: A Novel

by Lia Riley
The E.M.M.A. Effect: A Novel

The E.M.M.A. Effect: A Novel

by Lia Riley

Paperback

$18.99 
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Overview

Jane Austen meets Ali Hazelwood in this steamy, friends-to-lovers, STEM rom-com! He’s her best friend’s little brother and NHL forward. She’s a computer scientist used to being in control. The E.M.M.A., her elite AI training program, claims optimizing his performance requires one thing: the perfect match. According to its calculations, that’s her… Will Harriet discover that The E.M.M.A. knows best?

Harriet Smythe’s AI was supposed to create sports legends—not encourage her crush on her best friend’s totally off-limits, hot younger brother. But when funding runs dry, she has no choice but to enlist Gale Knight as her test subject. The same Gale she’s been secretly crushing on for years. The player who follows her every instruction with a knowing smirk that threatens to short-circuit her carefully maintained system.

Everything changes when The E.M.M.A. determines that finding Gale’s perfect match is essential to his peak performance. Even worse? According to its data, that match is Harriet.

Determined to keep things professional, she makes it search for new candidates. But as Gale dutifully endures awkward outings with pop stars and athletes, the chemistry between them only intensifies. And his willing cooperation during their sessions definitely isn’t helping her stay focused.

With her deadline approaching and The E.M.M.A. still playing cupid, Harriet must choose: trust in pure logic, or admit that sometimes taking control means letting go.

Maybe The E.M.M.A. knows something they don’t—even if they’re not ready to compute it yet.


Product Details

ISBN-13: 9780063412361
Publisher: HarperCollins
Publication date: 12/02/2025
Pages: 304
Product dimensions: 5.31(w) x 8.00(h) x (d)

About the Author

Lia Riley is a contemporary romance author. She loves wandering redwood forests, beach fog, procrastinating, and a perfect pour over coffee. She is 25% sarcastic, 54% optimistic, and 122% bad at math (good thing she writes happy endings for a living). She and her family live mostly in Northern California. 

You can also find her co-hosting the weekly Afternoona Delight Podcast, exploring the wonderful (and trope-filled) world of Korean Dramas through a writer’s lens. 

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