Encore: Is there a cheating gene?

<p>It was a Sunday night in the garage of their family home when journalist and author Kate Legge found out her husband of 30 years had been cheating on her for decades.</p><p>After a downward spiral as she came to terms with the news, the two of them took a road trip to Broken Hill to investigate the four generations of cheaters in his family line.</p><p>The process led Kate to look into the murky waters of how love was expressed in …