Another Symptom of Codependency to qualify as codependent is Dependency:

Codependents need other people to like them to feel okay about themselves. They’re afraid of being rejected or abandoned, even if they can function on their own. Others need always to be in a relationship, because they feel depressed or lonely when they’re by themselves for too long. This trait makes it hard for them to end a relationship, even when the relationship is painful or abusive. They end up feeling trapped.