Justin Timberlake has hinted that 'Mirrors' is about Jessica Biel.

The singer-and-actor appeared has suggested his recent chart-topping single is dedicated to his wife of six months, explaining that the lyrics refer to ''someone that you feel is your other half''.

In an audio clip on his official website, Justin said: ''It's definitely a special song for me. 'Mirrors' is a love song to someone that you feel like is, you know, sort of your other half. And it became a play on that. Not specifically about looking into a mirror.

''One of the most valuable things in a relationship is being able to constantly change and be individual, but look to the other side to the person that you're with and know that they're changing as well individually, but somehow you two can mirror each other and be the other half of that world that you both create.''

The mid-tempo hit is sung from the point of view of a lover fighting to save a rocky relationship with the love of their life, which seemingly echoes the 32-year-old pop star's own relationship with Jessica, 31.

The couple briefly ended their four-year romance in March 2011, before reuniting and marrying in October 2012.

Justin added: ''I think a relationship, when it's working, is constantly evolving because we as individuals evolve. You want to know that the person you're with is evolving with you. People change like seasons. We're always growing, always evolving, and to know that the other half of a special part of your life is, like I said, mirroring you, but also being an individual in their own way.''