I just read your post and many of the replies. I've been in your shoes totally! I had an amazing relationship with a man who was physically separated from his W for 2 years before divorcing. It was the most amazing relationship I've ever experienced - I had finally found my soul mate in more ways than can be described. The communication was great, the physical aspect was incredible, and I felt whole again. However, he was having such a terrible time dealing with the guilt of breaking up the home with his kids that he recently went back to his W for the sake of the kids. So, all fantasies and dreams went out the window. It was like he forgot the whole reason they spent 5 years in therapy, 2 years in different homes, and time dating other people.
I will not sit here and say that I agree with his decision because I don't. We had plans for a future and I now don't know what to think. From my experience, I can tell you that it is tough to see thru the love clouds and understand the real vs. the fantasy. I'm not even close to being past the hurt right now...it still hurts to breathe. But I have no choice but to try to look at this as the right time to truthfully evaluate what I need in my life. My heart tells me I'd take him back in a heartbeat (if that was even an option) but my brain is telling me to stop and think.