No one understood why husband Pierre Trudeau did not divorce her.
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Perhaps they had an understanding that they both could F around, still keep the same address but not have anything to do with each other.... https://www.cbc.ca/news/politics/deborah-coyne-the-underdog-with-the-trudeau-connection-1.1341031
There are such couples. Sometimes they will stay together for years and years, since both understand the other, and few average people would accept such an arrangement, at least not openly. Most would rather pretend they didn’t know about all those ‘extra-curricular events’.
**Elsa Lancaster, the actress who played Bride of Frankenstein, had an open marriage with her husband, Charles Laughton. Married in 1929. B/c Charles was gay, their marriage was a platonic
‘lavender marriage’. while Laughton had gay relationships, Elsa, who was straight, was also free to pursue her own affairs.