Sorry for your news
I live alone but by choice and circumstance, i could not expect anyone to live the life I do, kind of Nomadic, but based in BG and when I am in UK I could be anywhere.My heart is very much in BG, and have a hard time readjusting to the UK every time I return, it is a little drab for me.
Your story sounds different and was a joint adventure which is even more difficult I would imagine
To your question why would you feel compelled to move if you have made your home in BG, unless you want to be near family which is understandable.......... otherwise I have no problems living alone but have had a fairly long marriage in the past 17 years so have tried both.
Just take some time, your heart will tell you where you need to be.