a headache (pain or ache in the head)

to vex, to trouble, to distress, to afflict, to pester

to fit / to get stuck, to become embedded / to be right, be appropriate, fit / to fit a pattern / (informal) to be hooked

Alternative form of 嵌まる, to fit; to be appropriate (for something)

(informal) to be addicted (to something), to be stuck on, to be mad for (something)

嵌まる, 填まる: to fit, go into; to get stuck; to be appropriate (for something); to be addicted (to something)

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

pain (annoying person or thing), pain in the neck