Wow, that's so great that you guys are hanging out. I'd love to meet someone with SA. In a way, I think I would prefer it since I'd feel like we would be in the same boat when it comes to getting to know each other. I can be really intimidated with the idea of meeting someone who seemingly doesn't have any social anxiety.
I also find it interesting that you didn't really notice the other person's anxiety. I do think that this is probably true in just about any setting too (assuming you aren't having a panic attack or some other obvious visual clue).
Do you think it was easier knowing that you both faced some SA?
He ran because it grounded him in basics. There was both life and death in it; it was unadulterated by media hype, trivial cares, political meddling...It was all joy and woe, hard as a diamond; it made him weary beyond comprehension. But it also made him free.