My fiance is a heroin addict. i understand enabling but not codependency. can some one please explain codepdency?

Co-Dependency: Co-dependency refers to one person needing another to maintain there illness, in other words your boyfriends addiction may fit in some way with your need to, for instance, take care of him. Best wishes.

Related but differnt: Enabling is doing things that allow the person to continue their addictive behavior. It is part of what is referred to as codependency. A working definition of codependency is that any time you are doing something, thinking something, feeling something, valuing something based more on what is going on with the addict than on what is true or right for you, that is codependency.