It's uncanny that I'm exactly where you are right now. :-(
It's not easy to detach.
My husband has said he felt so rejected and so hurt and he will never put him self in the position to be hurt like that by me ever again. He will not go there anymore.
We seem to be at the same stage in this... I don't have any words of advice as I barley make it through the day myself.
My goal today is not to text while he is at work tonight... didn't do so hot last nigbt... time to try again.