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Sense of humor, religious beliefs, hobbies and interests are all big factors that determine compatibility among dating partners.
But could height difference also play a role in the happiness between spouses?
Some researchers say yes.
A study found that the bigger the height difference in a couple, the happier the woman was.
"Although it has been known that women prefer tall men in mating for evolutionary reasons, no study has investigated whether a taller husband makes his wife happier," said researcher Kitae Sohn of Konkuk University in Seoul, South Korea.
His studies revealed "a greater height difference in a couple was positively related to the wife's happiness."
But according to Sohn, the relationship between height and happiness diminishes over time.
Sohn, who conducted the study over a period of time and collected data from 7,850 women, said women naturally prefer taller men for reasons unknown to them.
"Women simply like tall men, while unable to say why," he wrote in the journal "Personality and Individual Differences." 'This is similar to people favoring fatty, salty and sugary foods without knowing exactly why. Such foods are essential to survival but were scarce as humans evolved. Hence, craving such foods increased reproductive fitness in the past."
He said women may prefer taller men because height is associated with strength, physical attractiveness and masculinity.
