Question

Seemingly out of the blue, harriot comes home from work one day and says to her partner sherry, "i've found someone else. i'm moving out tomorrow." the type of breakup this example represents is

Answer 1

the type of breakup this example represents is: sudden death
A sudden death breakup is a form of break up that seem to come out of nowhere without any form of build up.
The only reason this break up could happen is if the communication in that relationship is totally dead and they have no attachment toward one another