The 21-Day Theory — Watchpile | Watchpile

The 21-Day Theory

The 21-Day Theory

The 21-Day Theory

2025· 1 season·Complete

Drama

9.0/ 10

Reviews

Overview

Using the 21-Day Theory, a determined woman pursues a wealthy man to prove he's straight—but the truth defies her expectations.

Cast

Narikun Ketprapakorn

Narikun Ketprapakorn

Pie

Supakorn Saokhor

Supakorn Saokhor

Boss

Pataraphol Wanlopsiri

Pataraphol Wanlopsiri

Euro

Dom Hetrakul

Dom Hetrakul

Barami

Other works by Chainarong Tampong

Lock Love Game

Lock Love Game

2026

Club Friday The Series: Theory of Love

Club Friday The Series: Theory of Love

2025

Maya

Maya

2025

Club Friday Season 16: Hot Love Issue

Club Friday Season 16: Hot Love Issue

2024

Club Friday Hot Love Issue: Out of Sight Out of Mind

Viewers Also Enjoyed

Little Boy Blue

Little Boy Blue

Chapter of Love

Chapter of Love

The Sparkle in Your Eye

The Sparkle in Your Eye

Olvidarte Jamás

Olvidarte Jamás

Sana ay Ikaw na Nga

Sana ay Ikaw na Nga

Me, My Husband & My Husband's Boyfriend

Me, My Husband & My Husband's Boyfriend

Beyond the Common Ground

Beyond the Common Ground

Green Green Grass By The River

Green Green Grass By The River

The Girl from Plainville

The Girl from Plainville

Till Death Tear Us Apart

Till Death Tear Us Apart

Mom Ped Sawan

Mom Ped Sawan

Takara's Treasure

Takara's Treasure

Club Friday Hot Love Issue: Out of Sight Out of Mind

2024

One Night Stand

One Night Stand

2023

Wednesday Club

Wednesday Club

2023

Sing Again

Sing Again

2022

Club Friday Season 14: Love & Belief

Club Friday Season 14: Love & Belief

2022

Fahlanruk

Fahlanruk

2022

Club Friday Season 13: Love Seasons Celebration

Club Friday Season 13: Love Seasons Celebration

2021

Love and Run

Love and Run

2019