This depends on your definition of "open marriage", but to be clear, polyamory is _not_ about open relationships (which I think "open marriage" suggests). Polya

This depends on your definition of "open marriage", but to be clear, polyamory is _not_ about open relationships (which I think "open marriage" suggests). Polyamory typically means closed/committed relationships, but with multiple people. That they are made out to be sleeping around or in less serious relationships is incorrect, at least as far as the terminology goes. I would not say that a married poly person is necessarily a liar or in an open marriage.