OP here. I know this thread is so old now but I ran into my former friend today. The first time anyone has seen her since the end of 2012.
I deleted her and her husband from my facebook over a year ago and while a few other friends are still linked with them on there, they have not posted anything since 2011.
We had actually wondered if they had moved away, because we all used to bump into each other all the time around town and no one had seen anything of them.
Anyway, I was out shopping today and browsing around a store when I was aware of someone coming towards me between the rails. I looked up, thinking I would move out of their way, and this person also looked up and stared at me. I suddenly realised it was my former friend (she looked totally different - cropped hair) and she realised who I was. Just as I was wondering what to do she looked away and turned towards rails on the other side of the store.
I was so taken by surprise I didn't know what to do so I took the clothes I was holding and went to the fitting room. When I came out she was gone.
I actually felt nauseous. Like running into an ex who totally blanks you.