Whether a relationship is marriage-like also typically depends on more than just their intentions
This is a more difficult question, because we’re talking about people’s intentions and beliefs, and not simply where they keep their socks and underwear. Objective evidence of the parties’ lifestyle and interactions provides direct guidance on the question of whether the relationship is marriage-like.
This question comes up often enough that there are some really good cases that talk about what a “marriage-like relationship” involves.