The 21-Day Theory poster

The 21-Day Theory (2025)

Drama

90% User score

Overview

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

Series Cast

Current Season

Season 1

2025 · 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.

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The 21-Day Theory (2025)