Having a partner involves actions such as showing love and care towards her; However, there are men who put aside their attention when they already have something secure and look for new sensations in others.
However, it seems that men with low IQ tend to be more unfaithful, as a study has shown that they are not able to maintain a stable relationship. And not only refers to the bond of love but the intelligence that gives rise to evolution.
Dr. Satoshi Kanazawa, an evolutionary psychologist at the School of Economics and Political Science in London, says in an article published in Psychology Today that intelligence is the key to evolution because it is linked to certain novel and current aspects.
Previously the man lived in a polygamous relationship and was well seen; today, however, this deduces a not so intelligent behavior, since to assume a monogamous relationship is a greater responsibility in respect and freedom. Therefore, those who seek more than one pair reflect primitive man prone to promiscuity.
The theory predicts that smarter men are more likely to value sexual exclusivity than less intelligent men.
Kanazawa confirms that faithful men are smarter at maintaining sexual fidelity, which leads to the conclusion that the species did indeed evolve in that respect.