Diane Lane’s performance earned her an Academy Award nomination for Best Actress, as well as wins from the New York Film Critics Circle and the National Society of Film Critics. For those unfamiliar, OK.ru (Odnoklassniki) is a Russian social networking site launched in 2006, primarily popular in post-Soviet states. It is one of the few platforms from the “Web 2.0” era that has survived the rise of Facebook and VK.

For years, OK.ru operated in a gray area regarding user-uploaded video content. While the platform responds to DMCA (Digital Millennium Copyright Act) takedown requests, the process has historically been slower than on YouTube or Vimeo. Consequently, users who wanted to watch Unfaithful without paying a rental fee found that OK.ru hosted dozens of versions—complete with subtitles in Russian, English, and Ukrainian.

The film follows Connie and Edward Sumner (Diane Lane and Richard Gere), a wealthy suburban New York couple whose marriage has settled into a comfortable, if monotonous, rhythm. During a violent windstorm, Connie trips on a sidewalk and painfully injures her knee. She is rescued by Paul Martel (Olivier Martinez), a charming and enigmatic rare book dealer.

While OK.ru itself is a legitimate social network, third-party mirror sites or pop-up ads claiming to offer "HD Unfaithful 2002 ok.ru" can be dangerous. Users are advised to have ad-blockers active. Social engineering scams that ask for SMS verification to "unlock the video" are common in this piracy ecosystem.