Maarilat
To me, Ethics are nothing if not based around applicable Morality. Kind of goes without saying that there are different philosophical views in Poly relationships than Mono ones... but there's more to this than honoring that general difference.
I think that Morality between people who realize the significance of others in their relationships have bonds on levels which could be described as being deeper for lack of fear based preoccupations.
*snip*
Ethics are your own personal code of 'right and wrong' that you live by. Morals are the code of 'right and wrong' that OTHERS TELL YOU to live by. There is a difference. To me, morals make no sense. But, I'm an odd duck.
smile As for poly ethics, the main ones have really been stated already, though, I would add 1 thing:
Stop lying to yourself. Over the years I've learned that the biggest roadblock to successful poly relationships is people lying to themselves, and by extension, lying to their partners. A lot of the time without meaning any malice at all.
People have stopped doing the big, deep, soul-searching thinking before doing something important, or, they don't go deep enough. If even a whisper of you is not ok with it, don't say you are, and ignore that whisper. Let that whisper turn in to a solid voice, and raise your concerns. At the VERY least, if you aren't sure what that whisper is even saying yet, tell your partner(s) that there's something about whatever is going on that's not quite settled for you and you need some time to figure out what it is, put your finger on it. And ask them to not consider you 100% ok with it until you've got back to them.
Then soul search, REALLY soul search, find out what's wrong, and give THAT voice.
When people stop lying to themselves, and then to others, it works out a lot better.
smile And for goodness sake, think before you speak!!
mrgreen If you're ok with your partner going out for the night with someone new, don't say "Do what you feel you need to, but remember what's important." That's passive-agressive, and tells them that you really aren't ok with it. If you aren't ok with it, then say "I'm not ok with it, but, I've put some thought in to it and here's what we can do to make it better...." and give suggestions.
If you really are ok with it, then tell them "Sure, go have fun, I'll be here when you get back honey."