Hi Josie,
Have you signed consent orders, entered into a settlement agreement or obtained court orders regarding your settlement? If not, he may well come back and want more from you.
It is important to have a property settlement in order to finalise your financial ties with your ex. If you don't the other party can come back down the track and make a claim for Property Settlement. If this happens, the Court doesn’t look at the property at the date of separation, they look at it at the date of proceedings, and, if it makes it all the way through the Court process, at the date of Trial. Therefore, there are situations where property or debt acquired after separation by one party is brought into the property pool.
Either party to a de facto relationship may bring an application for Property Settlement at any time after separation, but as you have done its best to deal with it straight away. Proceedings for a property settlement (court application) must be brought within 2 years of your separation as a de facto couple. If you don't commence property proceedings within these limits you may lose your rights. If a property settlement is not reached prior to this time limit, the other party may still be able to bring an Application for Property Settlement "out of time" with the court's permission. So even if you are outside of the timeframe for a property settlement to occur, you are still at risk.
If you are able to negotiate and agree on your own settlement, the best way to finalise your property settlement is with consent orders which are orders that both parties have agreed to and which a court can review and if they are satisfied the settlement is just and equitable - make the orders.
I would highly suggest you seek legal advice - protecting your future assets is an investment.