How did you respond to your W when she went "ballistic" on you over this? If we can get some insight into how your fights go down we might be able to give you some pointers.
Her words to me went something like this: "He is biased. He doesn't believe in this kind of thing (polyamory). I had to spend half the day defending myself from him because he thinks I'm f***ed up!. I'd appreciate it if you didn't talk to him at all about me and guy. Me and guy should be the only ones you talk to about this!" She said all this to me basically screaming, in my face, with that kind of look that she reserves for her worst enemies.
So I respond: "Ok. Ok. If that's the way you feel." When she's in that kind of mood, I know not to try to be logical with her. It just makes her that much more angry.
Married 15 years, D5 x 2 W had EA and PA 10/2010 MC for a year improved things Alternate lifestyle, started 01/2012 has turned into a mess