It was 2009 when I was studying computer science at Helsinki University of Technology. Inspired by libertarian ideals, I came up with the idea of a decentralized Internet currency that cannot be controlled by any government or other single entity. I contacted some guy named Satoshi Nakamoto, who had drafted a technical proposal of such a system just a couple months earlier. He called it Bitcoin.
The story of how I became head admin is actually pretty boring. Moderators were needed, so I was made a global moderator. Then admins were needed, so I was made an admin. Then over time the other admins slowly lost interest and resigned until I was the only one left. I guess most of the people who were around here to see this have more-or-less left the community now. That's a bit sad.
It's not entirely clear, but for simplicity I usually say that I became head admin at the beginning of 2011, a little over a year after the forum was created.
The forum was originally located at bitcoin.org/smf, then forum.bitcoin.org (hence the redirect), and finally bitcointalk.org. Fun fact: The name "bitcointalk" was invented by Jeff Garzik, and he's the one who bought the domain.
So based on the quotes above (first by Sirius), It's safe to say that there is pretty much no relation between them and they never met face to face.