Based on what I have read it is not too late...but it is going to require a lot of communication and change. This could be the launch pad to a better understanding of yourself and her. You might feel like you are on the edge of a cliff but take a look down...instead of endings and death, there could be immense depth in your realtionship. Don't fight it, embrace it. What is the alternative?
Playing the Game of Life with Monopoly rules.
Monogamy might just be in my genes
Poly Events All Over