I’m sorry to hear of your separation.
Having separayed 3 times from 3 long term relationships I have had a taste of what you are enduring.
Time is the main healer but of course you have to wait for it. Distraction- keeping really busy is another way to fend off the grief.
Do you think there is any possibility he’ll return? Would you like to spell out the circumstances why he left?
This Is a safe place