Your colleague says one thing in a meeting but then does another. He passes you in the hallway without saying hello and talks over you in meetings. But when you ask to speak with him about it, he insists that everything’s fine and the problem is all in your head. Argh! It’s so frustrating to work with someone who is acting passive-aggressively. Do you address the behavior directly? Or try to ignore it? How can you get to the core issue when your colleague pretends that nothing’s going on?