Hugh Hefner says it's "easier" living with seven girlfriends than one wife.

The Playboy founder has famously had multiple women live with him in the Playboy mansion - including exes Kendra Wilkinson, Holly Madison and Bridget Marquardt - at once but he is adamant several ladies are easier to manage than a single spouse.

Hugh - who has been married twice to Mildred Williams from 1949 to 1959 and Kimberley Conrad, who he first met in the 80s - said: "Sometimes one woman is more difficult. I was married and faithful for eight years in the 1980s, and following that, as an overreaction to that failed marriage, I wound up with seven live-in girlfriends. Dealing with those seven girlfriends was easier than dealing with one wife."

At present, Hugh is only dating one woman, 24-year-old blonde beauty Crystal Harris.

And the 84-year-old media mogul - who is the subject of new documentary 'Hugh Hefner: Playboy, Activist and Rebel' - is happy to admit anti-impotence drug Viagra has helped prolong his sex life.

When asked if lovemaking changes as you get older, he said in an interview with the New York Daily News newspaper: "Thank goodness for the arrival of Viagra. It breaks down that (age) wall. But I think you gain some experience over the years and that helps. Woody Allen said, 'If you don't think that sex is dirty, you're not doing it right.' "