Iris Krasnow, author and HuffPost blogger, holds the secrets to a successful marriage.
Krasnow interviewed more than 200 women for her book, "The Secret Lives of Wives," and dug up some surprising truths about long-lasting marriages.
"The happiest women I interviewed have their own sense of passion, and purpose, and self identity, and sources of fulfillment outside of their marriages," she says in this exclusive interview. "It really comes down to guts, gonads and girlfriends."
The bestselling author explains that the best marriages are those in which wives drink, vent and travel with their girlfriends, flirt shamelessly -- with boundaries, and are attracted to their partners from the get-go.
Krasnow has authored five books on relationships, including "Surrendering to Motherhood," "Surrendering to Marriage," "Surrendering to Yourself," "I Am My Mother's Daughter," and "The Secret Lives of Wives."