This is such an insightful way to look at frenemies. You've really captured the essence of that complex dynamic. It's amazing how they can be both supportive and destructive at the same time, leaving you constantly on edge.

You're right, it takes a lot of emotional strength to deal with them, and setting boundaries is absolutely essential for your own well-being. I'm glad you were able to navigate that experience and learn from it. It seems like you've gained valuable wisdom about real friendship and how to protect yourself from those who might try to hurt you.

It's inspiring to hear how you were able to create healthy space between you and your colleague, even in such a confusing situation. You've learned a valuable lesson about recognizing true friendship and setting boundaries to protect yourself.