Reading thru this, boy - a lot of this sounds like what goes on in my house. I, too, suffered from trying to GAL and having my SO "talk" me out of it... or guilt me out of it...whichever way you want to look at it.
Don't beat yourself up too much about what went on. Do what you have to do for your own peace of mind. And your children. Your W is going to do whatever she wants to do, we all know that's how it works. As I'm ever so slowly learning, letting go is so very hard, yet so very necessary.
My thoughts are with you.
NM
PS - I had an idea for the ring thing - not sure if it's still an issue, but maybe if you don't want to wear the ring on your finger, how about on a chain around your neck?