(dated, potentially offensive) schizophrenia

diagnosis

to diagnose, to make a diagnosis

ancient times, a very long time ago

the past, old times / ancient

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

(archaic) a woman's brother (regardless of age difference) / (archaic) a woman's lover or husband / (archaic) a familiar man

once (in the indeterminate past)

olden days; former

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend