Love is blind

I watched him feel his way along the outside of the building using his hands to guide him. He reached the revolving door and walked in. I noticed that he didn't have a stick, but carried his hat in his hand and was muttering something incomprehensible to himself. As I walked past him he said "hello, how are you my friend?". Turning his head towards me, he uttered "you're beautiful".

I wondered what he really saw?