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Helen Hoang Books in Order

Explore Helen Hoang books in order, with concise summaries, series background, and practical guidance on the best place to start.

Last updated: July 14, 2026

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Helen Hoang books in publication order

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3 books

The Kiss Quotient

by Helen Hoang

2018

Stella Lane, a brilliant autistic econometrician, hires escort Michael Phan to teach her about dating and intimacy. Their practical lessons turn complicated when a carefully limited arrangement begins to feel like a real relationship.

The Bride Test

by Helen Hoang

2019

Autistic accountant Khai Diep believes he cannot love, until his mother brings Esme Tran from Ho Chi Minh City to California as a possible bride. Esme wants a new future, but their summer arrangement asks both of them to risk honesty.

The Heart Principle

by Helen Hoang

2021

After a viral video leaves violinist Anna Sun burned out, her boyfriend’s request for an open relationship sends her toward tattooed motorcyclist Quan Diep. A casual plan soon becomes a chance to fight for the life Anna actually wants.

Where to start with Helen Hoang

For the full connected experience: The Kiss QuotientThe Bride TestThe Heart Principle
For an upbeat, high-heat romance: The Kiss Quotient
For an immigrant-family story: The Bride Test
For a heavier, more emotional read: The Heart Principle

Helen Hoang sub-series and character series

The Kiss Quotient books in order

Explore this series
  1. Book cover for "The Kiss Quotient"

    The Kiss Quotient

    by Helen Hoang

    2018The Kiss Quotient, Book 1
  2. Book cover for "The Bride Test"

    The Bride Test

    by Helen Hoang

    2019The Kiss Quotient, Book 2
  3. Book cover for "The Heart Principle"

    The Heart Principle

    by Helen Hoang

    2021The Kiss Quotient, Book 3

The Kiss Quotient books in chronological order

  1. Book cover for "The Kiss Quotient"

    The Kiss Quotient

    by Helen Hoang

    2018The Kiss Quotient, Book 1
  2. Book cover for "The Bride Test"

    The Bride Test

    by Helen Hoang

    2019The Kiss Quotient, Book 2
  3. Book cover for "The Heart Principle"

    The Heart Principle

    by Helen Hoang

    2021The Kiss Quotient, Book 3

Author bio

Helen Hoang was born in Minneapolis and raised in Minnesota before later making her home in Southern California. She is Vietnamese American, and her family history, especially her mother’s journey from Vietnam to the United States, has shaped the people and family dynamics in her fiction.

Romance got to her early. Hoang read her first romance novel in eighth grade and has described herself as hooked on love stories ever since. That long-running reading habit shows up in books that take attraction seriously but also make room for awkwardness, work stress, family pressure, and the hard job of saying what you need.

Before she published a novel, Hoang earned an undergraduate business degree and worked in finance. Her early career gave her a feel for high-achieving characters who are good with numbers, plans, and professional goals, but less certain when feelings do not follow a neat formula.

In 2016, Hoang was diagnosed with autism spectrum disorder, in line with what was then commonly called Asperger’s syndrome. Learning more about autism helped her make sense of her own experiences, and it opened the door to writing romantic leads whose ways of moving through the world are often misunderstood by others.

That personal shift helped shape her first published novel.

The Kiss Quotient, released in 2018, introduced Stella Lane, an autistic econometrician who hires Michael Phan to help her learn about dating. The book starts with a playful, high-concept setup, then settles into a romance about trust, boundaries, class, and the relief of being understood. It also brought Hoang a wide audience looking for contemporary romance with neurodivergent characters at the center.

She followed it with The Bride Test in 2019. This time, the story follows Khai Diep, an autistic accountant convinced he cannot love, and Esme Tran, a Vietnamese woman offered a chance to spend a summer in California as a possible match for him. Hoang drew on conversations with her mother about poverty, immigration, and the work of building a life in a new country.

Then came The Heart Principle.

Published in 2021, the novel gives violinist Anna Sun and tattooed, motorcycle-riding Quan Diep a much heavier emotional road. Anna is exhausted by career pressure and the expectations around her, while Quan offers care without trying to turn her into someone else. The book keeps the series’ romantic warmth but spends more time with burnout, family responsibility, and the cost of always trying to be agreeable.

Across her books, Hoang returns to capable people who have been told they are too much, too quiet, too difficult, or somehow not enough. Her romances are frank about sex, funny in uncomfortable moments, and attentive to Vietnamese and Vietnamese American family life. She lives in San Diego with her husband, two children, and pet fish.

Edited by

Richard Reis

Software engineer whose passion for tracking book recommendations from podcasts inspired the creation of MRB.

Anurag Ramdasan

Lead investor at 3one4 Capital whose startup expertise and love for books helped shaped MRB and its growth.

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