More than half of cohabiting individuals reported sexual jealousy, compared to about one-third of individuals who lived separately (such as dating couples), and just 18 percent of married individuals.
Paik said the high rate of jealous conflict among cohabiting couples could be due to a strong expectation of exclusivity but less fidelity.
Researchers believe married couples encountered less jealousy because of the sexual exclusivity that goes along with exchanging vows-but also because they were more trusting.
"There may be a set of beliefs that's protective for married couples in terms of avoiding jealous feelings. They're somewhat insulated because they're more trusting, and therefore less likely to be suspicious or look for breaches," Paik said.
Paik said understanding intimate partner jealousy is important because it could be useful in preventing domestic violence.
"Jealousy is a very powerful emotion. In many cases, jealousy or love triangles are the motive for homicide or other violent crimes between intimates," he said.
The study has been published online in the Journal of Sex Research.
Source-ANI
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