Q: My ex-spouse had numerous affairs and spent our joint money on those relationships. Can I receive more than 50% of our property?
It is entirely understandable why you may want to ask for an unequal division. Unfortunately, with these circumstances alone, you would not have sufficient grounds. New Zealand has a no-fault system, meaning that for the most part, it does not matter that one party to the marriage or relationship has behaved poorly. In this NZ Herald article I discuss how misconduct can be relevant to the division of relationship property.
View some of my other advice articles.