The finding emerged from a study of 266 men and women in relationships conducted by University of Rochester researcher Heather Patrick. It was presented at a psychology conference in May.
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There are applications to this science, she explains in a press release. It "gives couples and psychology professionals insight into why some relationships aren't fulfilling even when everything looks OK on the surface," the release explains.
Simmering resentment is bad for a marriage — who knew?
— Rosie Mestel
P.S. And by the way, May was National Smile Month. Dang. We missed it.