I can’t survive without the love of my life

First of all, thank you for your help.
I’m going through the most difficult period of my life (I know, it’s a thought…) because of a very difficult divorce. My husband is leaving me, I love him as I did on the first day, I’m crazy about him, he’s the man of my life, and my pain is unbearable. My thoughts are: “I’m not going to be able to live without him, I can’t survive life without him, my universe is nothing without him, I love him, it’s not possible, etc.”
I try to welcome my emotions, my feelings. I try to analyze and describe my sensations “to the little martian.”

I try to do all these first steps, but what I feel is like a panic attack every second of the day and the night to the idea of a life without him. “I can’t”, “I won’t survive”, “I’m not going to make it”, “I want to die”.
I am sorry for this sad and confusing message.
Thank you.