Look, I don't really take relationship advice from George Costanza, any more than I think In the Company of Men was a how-to guide. That was a (perhaps feeble) attempt at exaggeration-as-humor.
I just reject this notion that we, as men, should have no say in how a relationship operates. That for some reason women are cannier about these things, so we should just let them call the shots. I call BS to that. From my experience, women are just as screwed-up, neurotic and unsure of themselves as men. There's no hidden insight or "women's intuition". Boys, they are as lost as we are.
And if this whole relationship is ending and there isn't money involved, a new lover involved, abuse, or a knock-down dragout argument, then it's a fairly wanky thing for her to do, and you're frankly better off with someone more mature.