YOU SAID:
Hey whats up? ive missed you
INTO JAPANESE
やぁ、何やってんの?私はあなたに会えなくて寂しい
BACK INTO ENGLISH
hey whats up? i miss you
INTO JAPANESE
やぁ、何やってんの?私はあなたがいなくて寂しいです
BACK INTO ENGLISH
hey whats up? i miss you
That didn't even make that much sense in English.