Heck this has been going on for years...I mean...in the sense you don't just marry the person you marry their family. They intrude, get into your business constantly, your spouse has to talk with them and tell them your innermost secrets, and it has always been legal.
For sleeping with them? Well, some do and some don't.
And as far as having more than one spouse - it has been around for years - it's just been called concubine or mistress or whatever else you wish to call it.
Still, I have enough of a time with the one I got...no way I can handle another at the same time...
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