I very much agree with everyone else has posted here. It seems like you're wholly concerned about what YOU want and not about what they want and what would be most beneficial. Sometimes moving on is the best thing you can do for a person, especially if you love them and continuing to seek them will cause them trouble and pain.
As well as this, this particular comment disturbs me:
Originally Posted by EurAsianGirl
I'm sure once I spill everything to the fiancee and even give her my Poly books to borrow, she'll come around to the idea too. Especially since she's highly bisexual.
Why on earth do you think that being bisexual makes her more likely to be open to Poly? I know a very large number of 'highly bisexual' women who are definately not open to poly.