My comment about my own perception was being in a position where I tried, relentlessly, to make relationships work with several different people where in hindsight it was clear neither I or my then partner where in a position where we could.
It took many years before I got to the place where I am at today. I'm now comfortable with being alone but also in a position where I'd be capable of truly looking after another and respecting boundaries. They were not always something I managed at all well.
If I can ask, "but once she decided to separate marriage became easier. Then I separated and marriage was blissful - " - you separated marriage?
Or did you mean your wife left the Military and then you followed suit?