During an interview with Extra, Depp insisted that he has never felt the urge to tie the knot.
"I never found myself needing that piece of paper," he said. "Marriage is really from soul to soul, heart to heart. You don't need somebody to say, okay you're married."
The actor admitted that he would only ever consider officially marrying Paradis if it proved to be important to his partner, but joked that he would be reluctant for his girlfriend to take his last name.
"If Vanessa wanted to get hitched, why not… But the thing is, I'd be so scared of ruining her last name. She's got such a good last name," he jested.
Depp will next star in The Tourist, which is released on December 10 in US and UK cinemas.
