United Kingdom, May 14 -- Nick Lachey and Jessica Simpson hadn't seen one another since their divorce until a chance encounter last month.

The former couple - who were married from 2002 to 2006 and famously starred together on reality TV show Newlyweds: Nick and Jessica - enjoyed a "cordial" and "respectful" meeting on a plane to Hawaii with their respective families a few weeks ago.

Nick said of the encounter on Watch What Happens Live: "You know it's been 20 years since. and so we haven't seen each other in those 20 years and then spent six and a half hours on a flight to Hawaii togetherr."

He clarified that when he said "spent", he meant they were simply in the "same vicinity."

He added: "Everyone was very very cordial, very respec...