Lost no one HERE is telling you to give him one more chance. That is YOUR CHOICE! He CHOSE to take drugs. Now you get to CHOOSE if you want to stay in this situation or if you don't. You have choices too.
Everyone here understands you. Don't think that they don't. Everyone's life has been touched by addiction.
They are only telling you that his need for the drug is like air. He thinks he needs it to survive. An addict in active addiction will do everything and anything to keep using. They will lie, cheat, steel, even sell themselves if nessesary to get their drugs. That is why people say its not personal.....because an addict lies even to themselves.
That does not mean you can't be angry! You have every right to feel hurt and angry. You trusted him and he was not trustworthy.