You must file the 1065 ASAP since it is now late and the penalties are piling up AND then you all will get a K-1 to report on your personal returns so if you have already filed you will need to amend.
Since this is your first year in a partnership and are not informed on your responsibilities I HIGHLY recommend you seek local professional assistance since there will also be state implications to deal with ... once you get educated you could try filing the 1065 yourself in the future.
