Yeah I remember when it first happened, iterally was bed ridden for weeks, couldnt properly eat nor sleep, and I would basically spam her with messages begging...the first few months were absolute hell since the wound was still fresh, I remember almost failing a course in college because of it.
You start becoming numb to it after a while and will be able to function again bit by bit, though in my case I havent moved on nor healed at all Im just able to keep myself afloat by hoping she'd eventually come back since Im almost sure she hasnt been with anyone else yet.