Will legalizing non traditional gay marriage lead to legalizing non traditional polygamy?

Divorce is banned in the Bible but runs rampant anyway so putting sin aside as a controlling issue, even though ity & polygamy are also banned in the Bible, do you think legalizing gay marriage will lead to legalizing polygamy? I wonder how many gay males are open to allowing their mate to have more than one 'spouse'! And how many straight females are open to allowing their husband to have more than one wife! Legalized polygamy isn't a one time '' experience, it's a lifetime of sharing the one you love with other 'legal' spouses!