Lake, Just keep holding firm with your boundaries. Your son will get it. He will get that he can't manipulate you, guilt you, or hold you hostage to his addiction. He will get that it is his addiction and his responsibility and that you want no part of it. That is why it is called tough love
It is tough, sometimes more on the parent than on the addict. But just think how many other people in your life would you put up with so much sh*t. Probably not many. Well realize that he is not your son anymore. He is an addict and do what you would do with any other unhealthy person to protect yourself. Don't feel badly about calling the sheriff. Your son will get caught and then he can't blame you. Sending prayers that your son will end up exactly where he needs to be and we both know that is not in your house. Hugs, Marle