The title of your post sounds makes it sound like one could "share" people like a plate of hors d'oeurves that you pass around at a party. To each his or her own, but it is no wonder poly groups are not your thing.
Basically, it sounds like you both really only want to focus on recreational sex rather than relationships, and since polyamory is not about sex, you would probably get better results in the swinging community.
There are plenty of sites that are dedicated to swinging, and even organized swing and threesome events at meetup.com. If you live in a more populated place, you can probably find some clubs or people who host private parties where you can meet people looking for NSA hookups. I think you will be most successful that way, because I am sure lots of people are also looking for that.
Last edited by nycindie; 11-19-2012 at 06:41 PM.