Have you ever seen people end up like this after a breakup?

Have you ever seen people whose lives took an extreme turn after breaking up with someone they loved deeply,
or after failing an exam or a job search they had been preparing for and losing their life's purpose?
It was an acquaintance I knew more than 10 years ago;
there was a woman in her late 20s who wanted to end her life
after breaking up with the man she was engaged to marry. ㅜㅜ