YOU SAID:
There you are! I have been looking for you.
INTO JAPANESE
あそこだ!ずっと探していたんだ。
BACK INTO ENGLISH
Over there! I've been looking for you.
INTO JAPANESE
あそこだ!探してたんだ。
BACK INTO ENGLISH
Over there! I was looking for you.
INTO JAPANESE
あそこだ!あんたを探してたんだ。
BACK INTO ENGLISH
There! I was looking for you.
INTO JAPANESE
あそこだ!君を探していたんだ。
BACK INTO ENGLISH
There! I was looking for you.
That didn't even make that much sense in English.