I thing detaching came for me when I realized that I will always love my stbxh, but that doesn't mean we will be together. I understand how you feel, I struggle too. I don't know how strong your faith is, and I am by no means a holy roller, but there was something that the pastor of my old church said once about faith that has helped me to let go a bit. Ultimately God has a plan, and although you may not know right now what it is, you have faith that there is a reason for this. If you try to fight it, then it hurts more.
Maybe it is time to stop being friends??? (((Hugs)))
Im still standin better than I ever did looking like a true survivor feeling like a little kid Im still standin after all this time and Im picking up the pieces of my life without you on my mind..