The Saying ‘Once A Cheater, Always A Cheater’ Is Backed Up By Science

If you’ve ever been cheated on, you know it sucks. If you’ve ever been cheated on twice or more by the same person, then you know it REALLY sucks. Not only do you feel betrayed, but you begin to question every little bit about yourself, wondering if it was you that drove that person to cheat. We, like your BFFs, are here to tell you it’s NOT your fault. And if you don’t believe us, science can back it up…

We’ve all heard the saying ‘once a cheater always a cheater’, but research carried out by a team at AsapScience, this commonly used expression may actually have ‘a basis in reality’. You’ve got our attention, guys.


They have found the gene coding for our dopamine receptor plays a key role in cheating for men and women.¬†Dopamine, AKA the ‘happy hormone’, is released when we engage in pleasurable activities, such as eating food and having sex, natch.

Everyone has a dopamine receptor, but the gene comes in two forms – some people have the long allele variant while others have the short allele variant and, depending on which gene you have, it could mean you crave these kinds of pleasure more and you’re more willing to take the risk to get it.¬†


According to the study, it found that 50% of people with the long allele variant of the gene had cheated on a partner, compared to just 22% of people who had the short allele variant of the gene. People with the long allele gene were also found to be more likely to take risks and succumb to addictive behaviours when compared to their short gene counterparts. Basically, long allele geners are more likely to cheat, and break hearts.

Ok, so it’s no excuse for cheating on someone, but it *could* be the reason some cheaters just can’t change their ways. And, let’s be honest, unless you managed to get your other half to do a genetics test, chances are you’ll never know if they have this strain of DNA. Just remember…