If Your Man Cheats Blame His Father

Apparently, infidelity is hereditary. Much like diarrhea...it's in the jeans. But, seriously, if your man cheats you might want to blame his father.

If he cheated on you, blame his dad. And his grandfather and his great-grandfather. It turns out that some of us are genetically programmed to be unfaithful. At least, that's the finding of researchers from Binghamton University, State University of New York.

While everyone has the dopamine receptor D4 polymorphism, or the DRD4 gene that promotes thrill-seeking behavior, about half of us have a variation of it that makes us more vulnerable to sexual promiscuity. The gene, which can influence the brain's chemistry and, thus, an individual's behavior, is also responsible for alcohol and gambling addictions.

Lead study author Justin Garcia told ABC News that those who have the DRD4 variant are "more likely to have a history of uncommitted sex, including one-night stands and acts of infidelity." He says the desire to cheat or have sex with many different people appears to originate in the brain's pleasure and reward center, where the "rush" of dopamine motivates those who are vulnerable.

Whatever the reason, it is still very painful and hard to forgive!