Guess What, Emotional and Sexual Jealousy Is Encoded in Your Genes

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InfidelityA recent study has revealed that jealousy, the ugliest and most festering of human emotions, might be genetic in origin. Hey thanks, Mom and Dad.

To study how genes influence jealousy levels, Swedish researchers collected their results from over 3,000 pairs of real-life twins (this was the unaired Mary-Kate and Ashley made-for-TV movie). They compared survey answers from fraternal twins against identical twins and found that one-third of our jealousy is probably due to our genes.

Other findings concluded that women are more jealous than men. Always. Men, however, are way more likely to get a visit from the green-eyed monster when their partner has been sexually unfaithful rather than just falling in deep love with Bob, the new guy in production. Women showed no difference in the ferocity of their reaction to emotional or sexual cheating; the whole infidelity thing was pretty much panned across the board. Our gendered jealousy instincts come from the good ole ape-days when men were more obsessed with ensuring their paternity and women were more preoccupied with making sure a man stuck around to bring home the bison bacon.

But the other two-thirds of why we turn into vicious, envious beasts when someone steals our someone is all due to environmental factors, like what we’ve learned about jealousy growing up or how many times our ex has sent dick pics to anonymous women he met over the internet. If you are chronically cheated on, chances are you’re going to be a jealous ass after a while (no offense, but you are), despite whatever genetic predispositions you might have had regarding jealousy.

Now if your partner finds you rifling through their drawers in a fit of jealous rage, you have a splendid trifecta to blame: your parents, reproductive evolution, and nefarious “environmental factors.” Don’t thank me, thank science.

Image via Veer.