YOU SAID:

I have a friend who doesn't know I exist in this whole universe and that makes me cry every night until I fall asleep

INTO JAPANESE

私にはこの宇宙全体に存在することを知らない友人がいて、眠りにつくまで毎晩泣きます

BACK INTO ENGLISH

I have a friend who doesn't know exists throughout the universe and crys every night until I fall asleep

INTO JAPANESE

私には、宇宙全体に存在することを知らず、眠りにつくまで毎晩泣く友人がいます

BACK INTO ENGLISH

I have friends who don't know they exist throughout the universe and cry every night until they fall asleep

INTO JAPANESE

私は彼らが宇宙全体に存在することを知らず、眠りにつくまで毎晩泣く友人がいます

BACK INTO ENGLISH

I have friends who don't know they exist throughout the universe and cry every night until they fall asleep