Replying to another questioner, 'Abdu'l-Baha said that when two
people, husband and wife for instance, have been completely united in this life
their souls being as one soul, then after one of them has passed away, this
union of heart and soul would remain unbroken.
(Notes of ‘Abdu’l-Baha’s
explanations; ‘Abdu’l-Baha in London’)