Since the introduction of legislation governing de facto relationships, family lawyers in Perth have assisted de facto partners in property matters, mediation and litigation. De facto relationships come in many shapes and forms and there is no single factor that determines if a particular relationship is de facto. However, generally a de facto relationship is where two individuals live together in a marriage-like relationship. The sex of the parties is immaterial. Therefore, there can be a de facto relationship between different and same sex couples. There can also be a de facto relationship where one of the parties is legally married to someone else, or is also in another de facto relationship.