What I'm hearing from you ... is a position that depends what your W is thinking/feeling. But what about YOU? What are you feeling at your core? I think it's important to know who you are, and what you believe is good/right, and what you want for yourself and your family before going into that talk with your wife.
It's important to have your boundaries, and react if your wife crosses any boundary, but other than that ... you have to have your own firm, philosophical foundation.
Do you have it?
Me: 50, MLC/WW 45 Young kids Nov 2015: BD1 Apr 2016: BD2 Jan 2017: W filed Feb 2017: D final