I can't be the only person this has happened to. You know someone you admire, lust at from a-very-far and occasionally, in weaker moments imagine how wonderful you would be together. You're happy in your own life, you know it will never happen but it's a harmless imaginary fantasy world. And then BAM they go and get engaged to someone in their real lives and you have to face it will never happen. The back up life is gone. A slight, not quite sadness, but a definite pause for 'oh....'.
Or am I just a loon having her dream world end that should seek professional advice? 