Guy Ritchie & Madonna: "Best Friends"

Madonna & Guy at the Sept. 1 London premiere of Rocknrolla. (Getty Images)

Despite all the rumors and reports of trouble in marital paradise for Madonna and her film director hubby Guy Ritchie, he tells OK! that he still relies on her during the tough times, like during the writing of his latest film.

"Writing is the hard part," Guy told OK! at the Toronto International Film Festival screening of his new movie, Rocknrolla. "It's just you and a computer... that's it."

But having his wife of nearly eight years was incredibly helpful for Guy. "She was very supportive," he recalled. "It was great."

Of course he's probably a little biased toward his wife, who was unable to attend the Toronto premiere because of performing obligations in Europe. So OK! spoke to rapper Ludacris, who co-stars in Rocknrolla to get an unbiased opinion on Madonna and Guy. "What can you say? They were very good together," he explained. "It’s second nature for them. They're vest friends."

Maybe it's because their relationship is so "second nature" that Guy had trouble explaining to OK! what the secret is to a happy marriage. "If you know, you tell me," he joked. "That’s a toughie, and… maybe you know the answer."

By Valerie Nome