YOU SAID:

how is everything going with you man? last time I saw you, you were at that party

INTO JAPANESE

最後に会った時あのパーティーにいた

BACK INTO ENGLISH

I was at that party the last time I saw you.

INTO JAPANESE

最後に会ったのはあのパーティーだった

BACK INTO ENGLISH

The last time I saw you was at that party.

INTO JAPANESE

最後に会ったのはパーティーだった

BACK INTO ENGLISH

The last time we saw each other was at a party.

INTO JAPANESE

最後に会ったのはパーティーだった

BACK INTO ENGLISH

The last time we saw each other was at a party.