at first, firstly

first, the beginning, the start

sweetheart / lover

lover

sweetheart

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

(chiefly women's speech) first person singular pronoun: I, me

(polite) first-person singular pronoun: I, me