It depends which side of the fence you're on,
if there is no love left in the relationship, it's over as soon as the solicitors/lawyers say it is...
for a smitten dumpee, probably never*
for the dumper, 'what relationship??'
probably the worst is the 'if only/what if', ..paths never followed, these can cause all sorts of regrets to grow in the mind..
*I can tell you what it feels like... ever seen the film of the Hindenburg, I'm looking around the wreckage to see if there's enough material left to make a coke can!
-have a nice day and pass the jack daniels