fade, lose color

memory; recollection; remembrance

to remember; to memorize; to recollect

gradually

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

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

he; boyfriend

turn pale, usually in one's face; to lose color in one's face

amnesia; loss of memory

mnemonics, the art or practice of improving one’s memory