YOU SAID:
Hello Fabian, what's up with you?
INTO JAPANESE
こんにちは、フェビアン、どうしたの?
BACK INTO ENGLISH
Hello, Fabian. What's up?
INTO JAPANESE
こんにちはフェビアンどうしたの?
BACK INTO ENGLISH
Hello, Fabian. What's up?
That didn't even make that much sense in English.