Thanks everyone! I've really appreciated the support and insight from many on this site. It's nice to be able to talk openly about this and not be shunned or judged.
Granted, I realize that an open relationship and poly are different relationships with different ideals but when it comes down to it, poly couples know how to communicate a LOT better than mono couples. It's refreshing to see (or should I say, read?) such openess in a relationship.