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The 21-Day Theory

The 21-Day Theory

The 21-Day Theory (2025)

90% User Rating

Drama

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

Chainarong TampongDirector

Cast

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Narikun Ketprapakorn

Narikun Ketprapakorn

Pie

Supakorn Saokhor

Supakorn Saokhor

Boss

Pataraphol Wanlopsiri

Pataraphol Wanlopsiri

Euro

Dom Haetrakul

Dom Haetrakul

Barami

Media

“เป็นแฟนกัน 21 วัน” สุดท้ายแล้วทฤษฎีนี้จะลงเอยแบบไหน ? [Club Friday The Series ทฤษฎี 21 วัน Trailer]

“เป็นแฟนกัน 21 วัน” สุดท้ายแล้วทฤษฎีนี้จะลงเอยแบบไหน ? [Club Friday The Series ทฤษฎี 21 วัน Trailer]

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Last Season

Episode 4

Season 1 (2025)

0% User Score

4 Episodes

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