Before you call your friend a ho for her one-night stands or a prude for not kissing on the first date, her actions might be something that's been embedded in her DNA.
According to a new study, DRD4, the same gene that's been linked to alcoholism and obsession with horror flicks, is linked to people's tendency to cheat or have one-night stands.
Researchers from Binghamton University gathered and studied the sexual history and relationships of 181 young adult volunteers as well as took cheek DNA samples to find the presence of DRD4. The results showed that those with certain types of the gene also had more one night stands and infidelity experiences.
"The motivation seems to stem from a system of pleasure and reward, which is where the release of dopamine comes in," a study research said. "In cases of uncommitted sex, the risks are high, the rewards substantial and the motivation variable – all elements that ensure a dopamine 'rush.'"
Despite the findings, this doesn't mean that only those who carry the gene will engage in one-night stands or cheating but are more likely to do it at a higher rate than those who don't have it.
So the next time he catches you, appeal to science. It's not you, it's your genes!