What dose he want

I fall in love with someone.
We got married.
He left me for someone else.
We got devoiced.
I moved away, far way.
Now he calls me two to three times a week, to see how I am doing. Why? But I don't know how to ask him. I still love this man more than he will ever know,I don't want to say the wrong thing to him and him think I am trying to push him back to me. I want him to see that the grass is not always greener on the other side, like we all think it is.