Alternative form of 頭がおかしい

(idiomatic) insane, crazy, nuts, out of one's mind

funny, laughable / strange, odd / unreasonable, illogical / interesting / tasteful / beautiful and attractive / excellent, superb

a candy store

可笑しい: strange, funny

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

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

to seem, to appear