polygamy is very common in society. It's called dating

The fact that should be shining like a red bulb in the night, is that polygamy is very common in society. It's called dating and crumbles to pieces when a couple in the dating sect decide to get more serious and cement a minimal deal, also known as "going together." There's a plethora of benefits with monogamy and it will certainly remain a dominate element is the relationship game. The knowledge of who's and how many ding-dongs are going in who's and how many hoo-hahs isn't anyone's business except the owners of the aforementioned ding-hahs, as long as all parties are consenting.