YOU SAID:
We have been going out for a long time but it’s not really fun
INTO JAPANESE
私たちは長い間外出していますが、それは本当に楽しいものではありません
BACK INTO ENGLISH
We have been out for a long time but it is not really fun
INTO JAPANESE
私たちは長い間出かけていますが、それは本当に楽しいものではありません
BACK INTO ENGLISH
We have been out for a long time but it is not really fun
That didn't even make that much sense in English.