Simon's people skills had deteriorated over the years. When he was younger, he could talk to anybody, about anything. The older he got, the darker his outlook on life, and the more repressed he became.
Meeting her, meeting anyone, was a huge step outside his usual comfort zone. "I don't know. Usual stuff, I guess. I read comics, watch TV. That kind of thing." What did he like to do? How sad was it that he had no good answer, no real answer, because he didn't know anymore.