Goldie Hawn, 80, credits one thing with making her relationship with Kurt Russell last 42 years

Goldie Hawn says her relationship with Kurt Russell works even without marriage.

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• Goldie Hawn says freedom is why her relationship with Kurt Russell has lasted 42 years without marriage.
• "If I'm a bird and you leave the cage door open, I may never fly out," Hawn said.
• Hawn, who's been married twice, said traditional ideas of partnership don't work for her.

Goldie Hawn, 80, says there's one reason her relationship with...