Have you ever been let down by someone unexpectedly ?

your lover/friend had said they think the world of you. And next they drop a bombshell that they don't want to see you again. Keep thinking about it and it drives me crazy. Why do people do this ? Why not be realistic about expectations and act accordingly instead of playing games ? Seems reasonable to me. Your experiences. And yes you move on but can't easily forget it especially if you have been friends for many years.