I'm not really sure... I just joined the group they way I've joined every other group, and next thing I knew, I was a contributor! I could try inviting you to the group if you like, or you could just click the join button and hope for better results. Let me know and I can try to help, although I don't know much more about how it works than you do!
George's wife is already taken, sorry
You could be his girlfriend if you want, though - that's still open. And so is John's wife, which you mentioned at the beginning.