United Kingdom, June 23 -- Sir Paul McCartney says his 14-year marriage to Nancy Shevell works so well because they are total opposites.

The Beatles legend tied the knot with Nancy back in May 2011, with the pair beginning their relationship in 2007 as Paul was finalising his acrimonious divorce from second wife Heather Mills.

Paul, 83, says he and Nancy, 66, are so happy together because they are "nothing like each other" and that works well for their relationship.

Speaking on the Song Exploder podcast, he said: "We've known each other quite a long time and it's a very interesting relationship. We're nothing like each other. I'm English, she's American. She's very practical, gets things done, I'm much more sort of whimsical. I will ge...