Alternative form of ハレム (“harem”)

Harlem, a neighborhood in New York / Haarlem, a city in North Holland

to make [something] / to cook / to write a literary work / to grow, to raise / to cultivate ability, to train / to draw up, form, establish / to make an acquaintance

作る: make - make a small thing, grow vegetables / 創る: create - originate, bring into existence / 造る: build, construct - build a house, or a building

oneself / first-person pronoun: I, me (often shows the speaker's lower position in a hierarchy than the addressee) / (Kansai) you

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

(ACG) reverse harem, a situation in which one woman keeps multiple male lovers

(と〜) thinking that […] (with the next clause explaining that the truth is contrary to expectations)