This is a safe place. Feel free to rant and to expose those parts of you that otherwise are not on view. I will leave others who have gone through what you are experiencing, advise and help you. But I imagine it is normal. Another part of it could be that because you have been hurt, you have a barrier in place that prevents you from getting to close to your Mr fantastic. It could be protecting you from future pain by preventing anything deeper. Look into that.
If you still want to be with H, it is normal that you cannot fully connect with another man. Do you want to be with him again? Maybe you don't but 26 years is a long time and moving on takes time. Take time to reflect on this. It is unfair to the new guy if you cannot commit because you hope to reunite. I imagine you need to become clear yourself and then the path should show itself. I just reread your earlier post where you stated your stance. reread it.
I met a fantastic guy who treats me like a queen and is kind, thoughtful and everything any woman could only dream of
This speaks loads. If you can attract such a guy into your life, you are shining. Your post puts you down several times, even though you defend yourself too. Don't doubt yourself. Regardless of what you decide about your R with him, remember you were capable of attracting him.
Best wishes
R 25 years M 14 years S11 & S13 Working on it alone since Oct 2014 M in trouble a lot earlier (~2 years) Feb 2016. 1st R chat in a yr. Next R chat Aug'17 Still together