Wiktionary
co-dependent
a. mutually dependent (especially of an unhealthy psychological relationship in which one person perpetuates another's addiction or harmful behaviour) n. A person in such a relationship
Usage examples of "co-dependent".
Joel, who was implying that it was unjust that there was no twelve-step program for serial murderers as there was for alcoholics, drug addicts, and co-dependents.
Biologically co-dependent, over the centuries they've become linked at such a core level that it's become a biological imperative.