>>321531493
“Sin lies only in hurting other people unnecessarily. All other 'sins' are invented nonsense. (Hurting yourself is not sinful -- just stupid.)”
-Robert A. Heinlein, Time Enough for Love

>>321532520
Robert A Heinlein was married to Virginia for 40 years until his death in 1988 and it was an open marriage for all of those years.

Also, William Moulton Marston, creator of Wonder Woman and inventor of the polygraph had a polyamorous relationship with two women from 1925 until he died of cancer in 1947 and both women continued to live together after his death until one of them died in 1990.