Boguslaw Pawlowski, Ph.D., a Polish Anthropologist has determined that there is a golden ratio when it comes to male-female attraction as well as longevity of their relationships. Specifically, if the man is 1.09 times taller than his mate - if the woman is 0.917 of the height of her's - this is significantly predictive of the long-term stability of the relationship. In addition, when other factors were controlled for, men and women were more attracted to the opposite sex, the closer they were to these height ratios.
If you're a woman who's 5'4" (1.626 M), this means you're "perfect" match (according to Pawlowski's work) is a man who's 5'9.75" (1.772 M). When I was writing this post - the first (famous) couple that popped into my head was Joanne Woodward and Paul Newman. Go figure - they were married for 50 years and their ratio works out to be 1.09!. The second famous couple I thought was Kevin Bacon and Kyra Sedgwick. They are going on 23 years of marriage and their ratio is 1.085!