Leonardo DiCaprio tells ET he's optimistic about starting a family! "Hopefully something will happen like that in the future."

ET caught up with Leo and his co-star Russell Crowe on the red carpet for their new film 'Body of Lies.'

The two first worked together in the 1993 film 'Quick and the Dead' and both say they were a bit "green" to the entertainment business.

Also, don't miss 'Body of Lies'' director Ridley Scott talking about working with Russell!

In the film, Leo and Russell play CIA operatives who team up to track an al-Qaeda leader rumored to be planning attacks against America. Leo's character is an ex-journalist-turned-CIA agent who is sent to Amman to work with Jordan's intelligence chief, played by Russell.

Watch the video to see what Russell and Leo reveal about the film and each other!