遣らかす: do

to drink up; to eat up / (colloquial) to do, especially, to do something bad; to make a mess; to perpetrate; to blunder; to screw up

big, large, great

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

(slang) Alternative form of 大きいお友達

everything

(colloquial) current boyfriend

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)