sure, it takes a certain kind of people to have it working propperly to everyone in the groups satisfaction though, very trusting and open minded for starters. I know of a guy who has two long term girlfriends, where everyone in the arrangement knows about it, its a full on pollogamy deal without the rings, its for keeps and they are all in it together, they even have 1 or 2 kids, its not arranged like a divorce either where its certain partners certain days, its all living and having sex together happily
the two girls are bi