Who Else Had Been Captured in the Photo?
As Alex was about to take the photo, he noticed a weird-looking man, hovering close to them. In fact, he was in the way and would ruin the picture if he did not move. He asked Matthew if he knew who this man was, as he seemed to be waiting for Matthew. The actor then confirmed he knew the man and that they were out together that day.
Friends
Matthew explained the man was a friend of his. The two of them were in Montauk on a trip, which is why Alex had met him that day. He usually would not have frequented this pharmacy. With this explained, Alex asked the strange man to move so that he could snap his photo, but it seemed the man was unwilling to do so.