Donner, a Catholic and a member of the largest Dutch party, the Christian-Democrat CDA (44 seats), said that such samenlevingscontracten are not illegal because the polygamy prohibition only applies to people that are formally married. According to the minister: “‘Marriage’ denotes ‘civil’ marriage, i.e. marriage as the law exclusively defines it.” The minister stressed that people married in such a [civil] way cannot marry someone else. A cohabitation contract, however, is different, he stated, adding that “contracts that settle the cohabitation of more than two persons can have a useful ordering function.”
allrighty... soon polygamy civil unions in this country.
I'm starting the bets at within 10 years