Why does my coworker always ask what’s wrong?

I’ve been working with him for almost a year and we’ve become friends, and recently I’ve been more open about my problems to him. But even before that if I look “off” he approaches me and asks “what’s wrong?”. It’s sweet when I do have problems but other times I’m just zoned out, or I’m figuring something out on my own. My automatic response is “nothing” but he doesn’t believe me. Sometimes he asks multiple times throughout my shift and asks if it’s x or y thing in my life that’s making me feel bad. Sometimes I just don’t feel like making myself vulnerable at that time. But I wonder why he feels the need to know what’s making me feel sad or mad. He does seem to be at least somewhat protective of me in general compared to how he treats other female coworkers.

Why does my coworker always ask what’s wrong?
Post Opinion