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Library/Book/The Love Hypothesis
Grade A24 sourcesHIS-01378

The Love Hypothesis

Book · 2021 · Niche

29Editable slideCertificate

A Reylo fan fiction became a BookTok romance hit with 541K print copies sold.

Clip · TikTok
Clip · TikTok
Clip · TikTok
The Love Hypothesis original 2021 cover
Ali Hazelwood / Berkley; cover illustration by Lilith Saur
Illumicrate exclusive edition of The Love Hypothesis
Illumicrate
Author portrait from Deadline's film-rights report
Deadline
The Love Hypothesis cover beside Lili Reinhart, cast in the film
Deadline
Illustration of books stacked on a phone with the TikTok logo
Marketing Brew

Spread Score

How it works
Reach1Contagion35Breadth70Velocity0Longevity5029

Numbers

Observed peak date
Week of Oct 13, 2022
Aug 30 ’21 to Week of Oct 13, 2022
Platforms
5
Started on Retail
Origin
Mixed
Media & publishing

Mechanics

  • Maker origin
  • Creator relayPrimary
  • Platform jump
  • Press loop
  • Identity badge

How it spread

Trace the origin

Book of the Month members ordered early copies in August 2021; paid TikToks followed in September. The novel reached No. 1 on PW’s trade paperback list. PW reported 541K print sales by September 2022.

Observed peak within the documented measurement window; not an all-time maximum. Dates use the stated precision; chart positions are date anchors.

Wikipedia views · Google searchesApr ’21JulOctJan ’22MarJunSepNovFeb ’24May ’25Aug ’26Observed peakPressRetailTikTokRedditOpen web
PressRetailTikTokRedditOpen web

12 more events on this chart

Join free to see them

Timeline (15)

  1. May 2021

    Publishers Weekly precursor · May 24 ’21

    Publishers Weekly reviewed Hazelwood’s debut before its release.[1]

    Open the first post ↗

  2. August 2021

    Book of the Month members seed · Aug 30 ’21

    Book of the Month members ordered the novel as a September selection.[2]

  3. September 2021

    @chamberofsecretbooks platform jump · Sep 6 ’21

    @chamberofsecretbooks posted a paid Book of the Month TikTok; two more paid creators followed that month.[3][4][5][6]

    Illustration of books stacked on a phone with the TikTok logo

  1. commercial · Sep 14 ’21

  2. commercial · Sep 27 ’21

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Why it worked

Do this

  1. 1
  2. 2
  3. 3

Pro opens the playbook, all 12 sourced numbers and 24 sources. Start with a free account.

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Origin
Mixed
Sector
Media & publishing
Region
US
Reported figure
—
Evidence
Grade A

Spread the same way

Book · Retail · 200754

The 4-Hour Workweek

Tim Ferriss; Crown / Harmony (publisher)

Blogger outreach took a debut book to No. 1 on the New York Times business list.

1M sold

1 / 8

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New cases, every week

How the next thing spread, the week it does.