Understanding the addict in the manipulative relationship

Dealing with a manipulative and controlling relationship is bad enough, but what happens when the person doing the bad behavior is also dealing with addiction? What if the addiction is the reason for the emotionally abusive behavior?

It's important to understand your role in an addict's life. Addiction exacerbates bad behavior. Some addicts don't do bad behavior when they're not participating in their addiction. Some do.

Where you are in all this is what makes the difference between feeling okay in a relationship with an addict, feeling trapped in one, or realizing you have no choice but to leave.