Can you explain the concept of co-dependency and how it can impact relationships?

Co-dependency is a relationship dynamic where one person relies excessively on another for their emotional needs, often at the expense of their own well-being. This can lead to unhealthy patterns of behavior, such as enabling or controlling behaviors, and can result in a lack of boundaries and a sense of self. In relationships, co-dependency can lead to imbalance, resentment, and difficulties in communication and conflict resolution. It can also prevent individuals from developing healthy independence and self-esteem.