GIMA- Great attitude...sounds like acceptance and knowledge of what you deserve.
Whole Again- I agree very much w/ personal happiness, but in the context of M, I believe you can have both- unless the sitch is that the unhappy partner is interested in someone else or simply wants to be single.
That's what's been so confusing in my sitch- W can GAL and do whatever she wants, but she believes she's simply unhappy w/ me. I dunno really, very confusing for me, but like GIMA said- can't make anyone stay, and can't wait for them to perhaps realize you can have both