I think I screwed up massively today. I bumped into someone I haven't seen in a couple of years, but I had heard she was going though cancer treatment. I was in a world of my own when she stopped me so it took me a second to realise who she was. Without thinking I said, 'sorry, I didn't recognise you, your hair is much longer than when I last saw you!' It dawned on me about 3 mins later while we were still talking and she said that her chemo had been really tough, that she might have been wearing a wig. Now I feel like I probably mentioned the one thing she really didn't want anyone to notice. I don't have a number to text to apologise, but it would probably just compound the crapness if I did anyway. Fuck it anyway.