I'm 22m, have a large asset base of stocks, house and possessions. Some possessions include classic cars and bikes and expensive equipment.

Before I enter into a defacto relationship or potential marriage, I want to create a brick wall or many walls between me and assets.

I was in a relationship in highschool/uni for 2 years. I was living with my parents and when we broke up she asked for money that she had "invested into the relationship". Told her to get stuffed but it was an eye opener for me.

I take it child support is an unavoidable cost, but can be minimised based on how much I "legally earn".

I've worked hard in oil and gas as an engineer, and I don't want all my time to be wasted by some woman trying to take half.

Any tips appreciated. People at work have given me a few tips they would've done before their divorce. My legal system is Australian.