Sorry to not have responded earlier to these amazing responses. I read them over and over carefully and I completely agree.
I made the conscious decision to hold my head up high like you suggested and believe that I deserve better. Yes, there is definitely still some residual sadness at the loss of that relationship but putting anymore energy into it is a downward spiral.
Ironically, another couple (that I've known for years) has come along that I feel an incredible emotional intimacy with. We are all open, great communicators, and taking it slow, and most of all, feeling the joy & happiness it is bringing all three of us. What a contrast!!! This is what I had envisioned as polyamory. Not that drama I was involved with before.
Thanks again for being so incredibly supportive and the voice of reason when I needed it most.