The show "Who TF Did I Marry?" is a viral TikTok series posted by Tareasa Johnson, known as Reesa Teesa, in February 2024. In the series, Johnson chronicles her relationship and marriage to a man named "Legion" (a pseudonym) who turned out to be a pathological liar. He falsified many aspects of his life, including his job, education, and personal history, which she only discovered after they married in January 2021. The series consists of 50 videos detailing the lies and deception she experienced, and it went viral with over 450 million views. This TikTok series is set to be adapted into a television show starring and executive produced by Natasha Rothwell. The original series on TikTok is extensively detailed, showing how Johnson uncovered numerous falsehoods about her ex-husband's identity and life.

There is also a separate TV series called "Who the (Bleep) Did I Marry?" which is a crime-reality show about people who find out their spouses have committed crimes. However, this is distinct from the TikTok series "Who TF Did I Marry?".

In summary, "Who TF Did I Marry?" refers to the TikTok series by Tareasa Johnson exposing her deceitful ex-husband, which is being turned into a television adaptation.