Elle, you must be a very strong woman/mother to have endured the acute shock from your H leaving without a trace.
A couple of things first - are you financially dependent on your H? are you protecting yourself from financial ruin? I did not take steps soon enough in my sitch.
IMO your H cannot make contact with you because he has extreme guilt for what he has done. He was a coward for how he left, and even in his new lala land he is comprehensive enough to feel guilty for what he has done.
Do not contact him for any reason except extreme emergency. He doesn't want to hear that you know about ow, anything you say will only anger him more. It is all about him at this stage.
So, what do YOU want? Do you want him back? After 7 months, have you had any thoughts about why he would have left the M?
Live your best life. Look your best whenever he sees you from across the gym. Love yourself and move forward with your life, but leave room if you want him to look in.
Live your life while you are still living. Riding the trail less traveled.