Yes, but not a romantic one. Years ago I met a man in a chat room on Compuserve. We kept in touch for many years sharing our family stories etc. We even wrote about a half a novel together in rounds. We both got busy, moved etc, so we are still in touch but not writing together at this time. He's a wonderful guy, and very talented with a wonderful family. And we've never met.
I also belong to a group on Sparkpeople. There are 4 of us that post every day, sometimes more often and have been together for over 5 years - feel as though we are friends but have never met.