M.R.
To be quiet honest I had a similar situation. Except I loved a man who could not be loved and after 6yrs i moved on and when I found a man he conviently came back into my life and i felt confused also. But I took a leap of faith with the new man since as you said you already know what you left behind- I went for something brand new and no demons- I have been married for 12 yrs now with three kids- no regrets- I am 42