YOU SAID:
there is this girl that i really like
INTO JAPANESE
私が本当に好きな女の子がいる
BACK INTO ENGLISH
There's a girl I really like.
INTO JAPANESE
本当に好きな女の子がいる。
BACK INTO ENGLISH
I have a girl I really like.
INTO JAPANESE
私は本当に好きな女の子がいます。
BACK INTO ENGLISH
I have a girl I really like.
You've done this before, haven't you.