Australia/Queensland: What constitues 'common law' wife/husband?

[erebus]

...or 'de facto' as I believe it's called.

How long do they need to be cohabiting?

What evidence of a relationship beyond that of lodgers, or even house-sharing 'companions' is needed?

Thanks to anyone who may know!

[mumblechum1]

www.hhfamilylaw.com.au/defactofacts.php

Any use?

[erebus]

Thanks, that looks very useful!