I'm so very sorry that you are caught in the dance of addiction.
but 3 days ago he asked me to bring him something and I said no and now he is trying to manipulate me into doing it and I said no. what do I do?
"No" is a complete sentence.....you've given your answer.
This roller coaster will continue until one of you changes. Until that time, it will continue to be an emotional hell. Since you have no control over another person, the person you can change is you. It is possible to find peace whether the addict continues to use or not.
gentle hugs
ke