boy Heather, it amazes me just how much alike we all are when we are just starting out in this crazy life with an addict.............I too remember how angry I was when I began to see how I was being manipulated by him in his active state.........the post you linked and something I read here ( that came from another site) really opened my eyes.........
take some time, think about the things you are learning and figure out how not to be an active part .................protect yourself from BEING manipulated.
Dont feel bad though, this thing called addcition.......well how could we have known, we (or at least I ) tend to trust and see good in others..........but we soon find that in active addiction......the disease outweighs the good parts.........
Hang in there