YOU SAID:
i had an a fair with someone
INTO JAPANESE
私は誰かとフェアを持っていた
BACK INTO ENGLISH
I had a fair with someone
INTO JAPANESE
私は誰かとフェアをしました
BACK INTO ENGLISH
I've had a fair with someone
INTO JAPANESE
私は誰かとフェアをしました
BACK INTO ENGLISH
I've had a fair with someone
That didn't even make that much sense in English.