I am on holiday now and away from the office, and it has dawned on me that my work relationship with my married colleague for many years is abnormal. He never did anything “wrong” but has an odd hold on me. He’s friendly and best friend one day, then very cold the next. We have to work together, so at those times, he’s so full-on - complimenting me on work, praising me to everyone, making intense eye contact, noticing I am down, and then coming to cheer me up. Then, there was zero contact for a while, and they completely ignored me. Yes, I ignore him these days, but he always finds a way to reel me in. He can be flirty and then back off. I am fed up with the stupidity of the situation. I am not engaging in any personal conversations with him anymore, but whenever I ignore him, he finds a new way to get to me. He’s very senior at work and holds a high position, so there’s some imbalance. What does this guy want? I am very dismissive of him these days but have to be politically careful too