Fall Apart Meaning

(idiomatic) To be emotionally in crisis.

Example:   My old briefcase is falling apart. I'll have to buy a new one.
2011, Tom Fordyce, Rugby World Cup 2011: England 12-19 France [1]
  England's World Cup dreams fell apart under a French onslaught on a night when their shortcomings were brutally exposed at the quarter-final stage.
  As a result of being addicted to heroin, she was falling apart.