Staying together can be hard Staying Together: Nature or Nuture? Published tisdag 2 september 2008 kl 13.56 Share Swedish researchers have discovered a genetic variation that seems to help determine how well men handle a relationship. George Wood has more: Hear more Listen here! 1:21 min 1:21 min Science and Technology Our journalism is based on credibility and impartiality. Swedish Radio is independent and not affiliated to any political, religious, financial, public or private interests. Find out more about how we work (in Swedish).