Dear Abby: My co-worker turned against me and I don’t know why

A reader expresses concern about a sudden change in their colleague's behavior that has led to increased tension and feelings of being isolated at work. The colleague's actions have caused the reader to feel undermined and targeted, raising questions about the underlying reasons. This situation highlights the importance of workplace communication and the potential consequences of unresolved conflicts, which can significantly impact team dynamics and overall morale. Understanding and addressing such issues early on can help maintain a healthy and productive work environment.