I believe in male-mono/female-poly relationships because the main threat for males allowing female non-monogamy was the possibility of an illegitimate paternity, and paternity tests have given males control over that aspect of their reproduction. So even if a female eventually gets pregnant from a man who is not her husband, the husband may even decide to adopt "1" child who is not his AS LONG AS HE KNOWS SOME OTHER PREVIOUS CHILD IS OFICIALLY HIS.

But the problem for allowing male non-monogamy is that men won't stop with a second, or third, or fourth wife. There are records of arabian harems with more than 1000 wives married to a "single" man. And one man cannot give much care to "one" particular wife IF HE HAS MORE THAN 10 OTHER WIVES TO CARE FOR.

On the other hand, females non-monogamy can be satisfied with "bigamous" relationships, because women are biologically inclined to be much more selective than men, sex is "more" risky for women who can get "pregnant" from it. So women's ambition for multiple partners is much more "limited" than men.

That's why I thing it's easier for a mono-male/poly-female relationship to work. Any thoughts ?