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Best Episodes of The 21-Day Theory
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Worst Episodes of The 21-Day Theory
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The 21-Day Theory Episode Guide
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Using the 21-Day Theory, a determined woman pursues a wealthy man to prove he's straight—but the truth defies her expectations.
The first episode of The 21-Day Theory aired on January 17, 2025.
The last episode of The 21-Day Theory aired on February 07, 2025.