If you're single and looking to lock it down, you might want to consider one very important characteristic in your potential partner: the length of his or her ring finger.
A recent graphic put together by Happify points to a surprising fact about people in relationships. If their ring fingers are on the shorter side, they're more likely to be faithful to their partners.
Dubious? Research conducted out of the University of Oxford and Northumbria University found having a longer ring finger points to being exposed to higher levels of testosterone in the womb, which also correlates to a person being more likely to cheat.
Of course, ring finger length isn't all there is to cheating.
According to a video released by AsapSCIENCE, cheating is related to the gene coding of our dopamine receptors. Dopamine is the chemical in all our brains that delivers that little high when we do things that bring us pleasure. (Think sex and great food.)
Here's why cheating may be genetic: Researchers found people with a long allele for this receptor are more likely to struggle with addiction, take more risks and cheat on their partners.
On a less depressing note, Happify also has some interesting (and more positive) facts about love and sex in the chart below, so check it out.
Citations: Everything You Need To Know About Sex and Happiness (Happify), How hands could predict infidelity: People whose ring and index fingers are same length are more likely to be faithful (Daily Mail)