Interesting thread. I've only had one "unknown" to me international travel companion so far. Went to SIN and hooked up with another FTer I'd never met. Everything went fine.
But I could easily see how things could get stressful if a selfish person couldn't even let you know at least a few days in advance they would be a no show.
How unbelievably rude.
I curious if there was any hints in reading their posts or PMs that they might be that self absorbed?
I would hate for it to happen, but would probably plan on it if I didn't have a track record with them.
On my trip, we each booked our own room at the same place, so it wouldn't have been as trying.
Sorry to hear about your bad luck.