When I mentioned formalised you hinted that the only way was thru marriage,
More deception by the SS lobby.
In NSW, the Property (Relationships) Act 1984, section 4 defines a de facto relationship as that between two adult persons living together as a couple who are not married to each other or related by family.
SAME-SEX PARTNERS
‘Next of kin’ can therefore include lesbian and gay partners. Despite this, if a person in a same-sex relationship dies without leaving a will, their partner’s wishes may be ignored by the family unless the partner can establish that a de facto relationship existed. This can be an important issue for a lesbian or gay person who may want their partner rather than their family to control the funeral arrangements. For this reason, it is especially important for lesbian and gay people to make their wishes clear in a will.