Short for ヘビーメタル (hebī metaru, “heavy metal”).

love (in both senses of loving a friend or family member and a partner romantically) / very (most) favorite

band (clothing accessory) / band (group of musicians) / band (type of broadcast frequency)

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

(chemistry) a benzene ring with two substituents in alternate positions / (chemistry) an oxyacid with relatively few water molecules

meta-

(cant, jargon) German silver

(slang) meta