Luna, this is nothing to do with coincidence, and I don't know if this is the sort of thing you mean, but it is something I can't explain. I bumped into somebody in the street one day and we recognised each other immediately. We were absolutely overjoyed to see each other. We hugged and laughed and were both completely ecstatic. Then I stepped back, looked at this person and realised that I didn't know who he was - and he didn't know who I was either. It was crazy. We tried hard to figure out where we'd met before; we went through schools, jobs, homes, our social lives, our friends, our families, holidays, hobbies - everything we could possibly think of, but to no avail. He lived miles away from me in a town I'd never been to, and had only just begun to come to offices near my home once a week on business, so it wasn't even that I'd seen him around. After that we met for coffee regularly in an effort to solve the mystery, but we never did. We knew each other so very well, but in reality we didn't even know each other's names, and we never got to the bottom of it. It's always puzzled me and I can't explain it - unless perhaps we'd known each other in a previous life, if such a thing exists - but if anyone has any other ideas, they would be very welcome.