It’s definitely ‘not a bad thing’ if you’re one of the love-birds Justin Timberlake is looking for.

The Mirrors singer’s new video debuted on the Ellen DeGeneres Show and it’s all about the search for a couple who got engaged on a Long Island train to one of his songs.

The mystery man who popped the question, got down on one knee with a mini-boom box overhead playing Timberlake’s ballad Not a Bad Thing to propose to his sweetheart.

The video begins with a dramatisation of the proposal between the wanted couple and goes on to detail how two people are making a documentary on finding them.

In between the search scenes, the video features different couples talking about their own love and how they feel about the train proposal.

We knew JT was a hopeless romantic!