I found this article very interesting and just another one of the ironies of male-female relationships. Seems like even though there is overwhelming evidence that long term monogamous relationships are very beneficial to both men and women in many ways, there are always those caveats.
Marriage is more beneficial for men than for women – at least for those who want a long life. Previous studies have shown that men with younger wives live longer. While it had long been assumed that women with younger husbands also live longer, in a new study by Sven Drefahl from the Max Planck Institute for Demographic Research in Germany, has shown that this is not the case.