My husband didn't care if he lost me until he actually lost me. And now that I forced a separation and am divorcing him, he is trying to fix or PROMISE to fix the problems that should have been fixed on his end months and months ago. I grew very unhappy with him over time and it all came to a head and to a close when he cheated on me.
Time does heal. It will take time. Perhaps you can learn something valuable about yourself through the divorce process. Are there things you could have done better as a husband? Where did the problems exist and how did you contribute to those problems? I am not asking you to answer, I am just posing these questions to help you to think on it.
Endings suck. There's no way around it. And right now is a most difficult time to be facing a divorce on top of covid.