Justin Timberlake takes the stage during the Brit Awards 2013...

Justin Timberlake takes the stage during the Brit Awards 2013 in London on Feb. 20, 2013. Credit: AP

Justin Timberlake Thursday released a documentary-style music video he said he hopes will locate an anonymous couple who became engaged on the Long Island Rail Road.

"We heard that a couple got engaged on the LIRR, and when this guy asked his girlfriend to marry him he was playing 'Not a Bad Thing' on a Beats Pill" portable speaker, the singer's representative told Newsday. In response, Timberlake's record company, RCA, commissioned music-video and TV-commercial director Dennis Liu and producer Brooke McDaniel to create a video for the song.

"This is a true story," a female narrator says in the clip, which premiered on "The Ellen DeGeneres Show," going on to describe a couple on a Jan. 12 train speeding toward Pennsylvania Station. "It was a scene out of a movie, like 'Say Anything.' A young man proposed to his girlfriend playing a Justin Timberlake song. . . . We don't know who these people are or what their story is. But maybe you do. We're making a documentary about finding love. Have you seen this couple?"

On the website haveyouseenthiscouple.tumblr.com, the filmmakers specify the proposal occurred around 8:20 p.m. on the Babylon line.

Timberlake's rep said the story is not apocryphal and that a witness had come forward.

Liu's YouTube page and McDaniel's website each have a 54-second version without the song, which they expanded to the five-minute, 18-second video in which the two search for the couple and interview people about falling in love. The shorter version notes that the couple was 22 to 28 years old and the woman wore a pink peacoat.

A Long Island Rail Road spokesman said he was unaware of the proposal or if the filmmakers had contacted the railroad.

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