YOU SAID:
Hey there buddy, I missed you!
INTO JAPANESE
やあ、バディ、あなたがいなくて寂しかった!
BACK INTO ENGLISH
Hi Buddy, I missed you!
INTO JAPANESE
こんにちはバディ、私はあなたがいなくて寂しかったです!
BACK INTO ENGLISH
Hi Buddy, I missed you!
That didn't even make that much sense in English.