partner statement

We have submitted the Applicant form for my wife and now I, as the sponsor, am finalizing my own statements (financial, household, social, commitment, etc). Currently I have just reworded the statement of my wife into my own words so it's the same story with the same facts but from my view...

Hi everyone I am sponsoring my partner on a partnership visa. I am about to write my statemant and thats easy enough. My question is whether I need to attach proof of our relationship? Joint finances etc or is this all done in his application? It is my understanding that I should include...