The much touted idea that women peak sexually in their 30s and men in their teens does not enter into it -- most of these couples are beyond both those age periods.
But what about the notion that men are "hard-wired" to seek a smooth-faced, curvy receptacle for reproduction and thus are drawn to younger women?
Braving "robbing the cradle" jokes, almost one-third of women between ages 40 and 69 are dating younger men (defined as 10 or more years younger).
According to a recent AARP poll, one-sixth of women in their 50s, in fact, prefer men in their 40s.
Robinson syndrome." You'll be surprised at what men find appealing about older women.
Their sentiments represent a very large proportion of the opinions we heard expressed. When I saw her, I thought she was just the perfect woman for me and I was sure about that.
What's different about the Hutchinson-Stodden marriage and the Cox-Catsimatidis wedding is that the grooms were willing to enter so publicly into relationships with teenagers, with the apparent approval of their brides' parents.
Catsimatidis, who is now 21, told that her father "wouldn't have given me up to anyone else," while Stodden's mother Krista was quoted as saying, "We are totally supportive of this marriage.
Those were the ages of Ashton Kutcher and Demi Moore when the couple tied the knot last year, making their highly publicized May-December romance official.
But even though their older woman-younger man relationship may be among the world's most visible, it's not that unusual anymore.