Update.
I went to visit my friend. On the way I met her neighbour again. He was outside smoking. I smiled at him and said hi. He looked at me coldly and didn't say anything. Then turned his back to me and looked in opposite direction. I stood there and was disappointed. Friend reassured me later I didn't do anything wrong.
I feel a bit foolish at the moment but I do appreciate all your replies.
I went to visit my friend. On the way I met her neighbour again. He was outside smoking. I smiled at him and said hi. He looked at me coldly and didn't say anything. Then turned his back to me and looked in opposite direction. I stood there and was disappointed. Friend reassured me later I didn't do anything wrong.
I feel a bit foolish at the moment but I do appreciate all your replies.