Matthew McConaughey and Sandra Bullock want to make another film together.

Matthew McConaughey

Matthew McConaughey

The former couple previously starred in legal thriller 'A Time to Kill' in 1996, and though things didn't work out romantically between them, they have remained close friends and are looking for a new joint project.

Matthew said of the 52-year-old actress: "We dated for a while after 'A Time to Kill', and we're still friends. She and I have another version of our relationship to put on film, and we're looking for something.

"She's not a little girl. She's a woman. She could run a country."

The 47-year-old actor - who has kids Levi, eight, Vida, six, and Livingston, three, with wife Camila Alves - became widely associated with romantic comedies in the 2000s, and despite their light subject matter, he insists the performances are much harder to get right than people think.

He told Playboy magazine: "People say, 'The dramas you do now have to be so much harder,' but that's not true.

"In a romantic comedy, you can laugh but not too loud or the audience may think you're crazy. You can love hard, but hey, just a little less tongue.

"You can get angry, but don't get too angry because you'll sink the ship and won't make it back when the characters get back together in the third act.

And Matthew admitted it was hard for him to break out from the genre because he wasn't offered dramatic roles.

He added: "I also dove into some dramas when I was doing romantic comedies - 'We Are Marshall', 'Two for the Money' - but I had to take a major pay cut and fight for them. There were 10 guys ahead of me who could have taken those roles. No one was looking for me to do dramas."