"My IC basically said we got married young and never really dated much so we did not have a chance to grow through failed relationships. We did not get to figure out what we wanted in a relationship and how to ask for it. Basically we did not grow up and now my W is wanting out instead of doing the tough work of looking at herself."
So I might sound too controversial, but part of me does not believe in this. Therapists love to say this. My H has said this a lot. He wants to date other women to learn what he really wants and blah blah. I don't know. That sounds like his "copout." I never had a serious R before I met my H, and I never felt the need to go out and date other men to see what I really wanted. I got married bc I loved my H, and though I didn't like some of his behavior and lifestyle, I never thought of D as an option. So I think for some people, this might apply, but it does not apply to everyone.