Some say it’s the high from lying and hiding, some say it’s purely about opportunity.But there are as many reasons to cheat as there are people. Up until two hundred years ago, couples generally married for proof of genetic monogamy, in order to pass down their sheep or their farmland.We live in a culture where almost 50 percent of married people get divorced.Many of these marriages, perhaps as many as one third, end because of infidelity.There are, however, no studies that truly prove that we as mammals are naturally monogamous or non-monogamous.We can look at our history as primates either way to justify our behavior.
They said that the length of one’s ring finger indicates the level of the hormone testosterone that the developing fetus is exposed to in the womb.
The longer the ring finger, compared to the index finger, the higher the level of hormone and therefore they rationalized a higher statistical correlation for cheating. And the reader should exercise caution here before they demand their partner’s glove size.
There have also been studies with prairie voles, one of the only truly monogamous mammals, compared their mating habits to their very promiscuous cousins, the mountain voles.
If their foundation is strong and they can communicate well, and they are flexible in general, they seem to be resilient enough to make it work.
After infidelity however, it is also possible for many couples to stay together and redefine their relationship.