Why some men cheat – genetic link to relationship difficulties

September 4, 2008 Comedian Robin Williams once defined the key issue of fidelity as being that men had a brain and a penis and only enough blood to run one at a time. We all know some guys are faithful, and some are not, but until now, it all appeared random behaviour. Now new research suggests that men who carry a certain gene behave differently in relationship. The incidence of the gene has been statistically linked to the incidence of a marital or relational crisis in the past year ,how strongly the man felt he had bonded with his partner, and what their respective partners thought about their relationship. One wonders if perhaps one day we’ll see genetic screening for prospective partners?

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