Hi Needing, I am sorry you are going through all this and I think you allowed him back in because you love him and wanted to give him one more shot. Dug addicts know how to get to their loved ones and manipulate. They know exactly what to say. Now that you have learned he was lying, you sound pretty resolute and know what you need to do. No need to beat yourself up over believing him. You can never say you didn't try! Now it is time to take care of yourself. If you can, I would change the locks and put his things somewhere outside. He sounds very unstable. it is very sad when you see nothing of the person you once knew them to be. That is what drugs do.
I loved the book and found it very helpful. I hope things get better for you. Hugs.