Hard to be positive

[Ruby100]

My H visited last night. Our plan was to sort out more of his belongings for his move away. I asked him if he was 100% sure he had a future with the OW? “No but he knew this new job & move away was right”
Was he 100% certain that he’d done the right thing by leaving home “Yes”.
Was he 100% certain that he’d done the right thing leaving me? “Yes - too much had been said & done. That I came as a package with my family & they would never forget what he’d done”
We both said we loved each other & he said that he regretted everything he’d done. I said if 2 people loved each other that they’d fight to be together. He told me he loved her too.
I feel like I’ve gone back to September 2016 when he left. Like all my chances of ever winning him back are gone & that, as pathetic as this sounds, my life is over - again.
What I don’t understand is that I felt I had made such progress with working on myself but his pending move away has stirred up so many emotions that I thought I’d dealt with. I feel devastated that I’ve lost him all over again. Angry at the OW for taking him away. Frightened of a life without him. He/they are excited about their new life together & I can’t see a way out of this despair for me. There is nothing more I can do to save my marriage. Sorry, this sounds ridiculous after all this time. What do I do now? How do I come come back from this?