THIS is the reason posters are using the word "obsessed."
I think if you are totally honest with yourself, you will admit that calling him to tell him that he doesn't have to avoid you is just an excuse to gain contact again.
If you truly do not want to cause them trouble, then leave them alone! In time he will come to understand that you are "safe." But that is not going to happen if you can't leave this alone.
Look, we are not unsympathetic to the way you feel. If all of this sounds harsh it is just that it is imperative that you get on board with going dark here. I understand, I really do. It was (and continues to be when I need to use it again) hard for me.