Yale researchers have pinpointed what happy couples have in common

A new study gives a clue to the secret to a long, blissful marriage: genetics. Yale University researchers concluded that the happiest, most secure-feeling couples in an experiment had at least one person in the pair with a variation in their gene receptor for oxytocin, known as the “love hormone.” “This study shows that how we feel in our close relationships is influenced by more than just our shared experiences with our partners over time,” said Joan Monin, associate professor at the Yale School of Public Health. “In marriage, people are also influenced by their own and their partner’s genetic predispositions.”

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