YOU SAID:

this is the most fun ive had with a guy in a long time

INTO JAPANESE

これは、長い時間の中で男と一緒に持っていた最も楽しいです

BACK INTO ENGLISH

This is the most fun I've had with a guy in a long time

INTO JAPANESE

これは私が長い間男と一緒に持っていた最も楽しいです

BACK INTO ENGLISH

This is the most fun I've had with a guy in a long time