I feel like my coworker is subtly avoiding me (in group the have turned their back to me multiple times and stood where there are objects blocking eyesight) and I think it's because I said I walked the long way to their workstation just to say hi. How do I address this new awkward phase? I feel like the smart route is to ignore and avoid and I want to try to address them with my concerns, but I'm worried about phrasing and seeing things incorrectly. 

We've gotten along fine and great for months weekly up til now, and I said the thing earlier this week.