A subjective belief or intention held by one party as to whether their relationship is marriage-like is not relevant to the determination of a de facto relationship under s 13A of the Interpretation Act 1984 (WA); what is required is the parties' common intention as to an enduring union, which must be objectively manifested in their conduct. Even a mutually held subjective intention to an enduring union that fails to manifest itself in the parties' conduct will not establish a marriage-like relationship. An appellate court will not interfere with a trial judge's adverse credibility findings in de facto relationship proceedings unless those findings are demonstrated to be wrong by incontrovertible facts or uncontested testimony, or are glaringly improbable or contrary to compelling inferences.
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