Danny DeVito Shares Secret to Unconventional Marriage With Rhea Perlman

Celebrities in unconventional marriages have become increasingly open about their personal arrangements in recent years, perhaps most notably with Jada Pinkett Smith's reveal that she and Will Smith have been separated for several years despite remaining legally married. This practice of living separate lives while simultaneously avoiding divorce is something iconic actors Danny DeVito and Rhea Perlman know quite well. 

DeVito and Perlman got married in 1982 and have three children together as well as one grandchild...