My question to you can you tell when that person is lying to you? Are there patterns that you see when the addict is high?
My XAH doc is or was Meth smoking it. Every time he cleaned up he was great talked to him all the time, could call and him answer his phone, or if I needed anything when he was clean I would have. When he was using he never answered phone call, texts, or would just kind of drop off the face of the earth.
He is now in rehab a controlled rehab, I can see a difference but he still has some things he needs to change before i would believe he is clean.
But it is the actions not the words that work for me. He can tell me anything and my first thought is he is lying prove it to me. If you prove it to me and I am wrong then I will say sorry but until that trust is there by showing me you are willing to change yourself.