TL;DR: Do not subscribe to the 'but my country/state does not have common law marriage so it's ok to cohabitate' argument . Laws can apply retroactively

Hello guys, been MGTOW for a while (1.5+ years) and wanted to start a series of posts on my observations. One of the most dangerous comments I see/hear in the manosphere is the pro-cohabitation argument of no common law marriage existing in your jurisdiction. Thing is, laws can apply retroactively (ex post facto) (related link), so after living for 1 year with your GF in your non common law jurisdiction you can still find yourself married in the blink of an eye. I agree that in some countries it's really hard to pass ex post facto laws but in today's society of 'being guilty until proven innocent' you definitely cannot trust 'laws' put there to protect you from other laws.

Always cover your ass.

EDIT: Addendum: I was intrigued by Appleseed's comment and it looks like this scenario might have already happened. I'm not versed in law and this is just a relatively quick Google search but this analysis (no idea about accuracy) indicates that in the BC common law case this was essentially enforced done via legal trickery. If I understand correctly they changed the definition of 'spouse' so that after the law is in effect if you were at the time in a 'married like relationship' for 2 or more years you are a 'spouse'. Hence the moment the law was enacted you would be married. This was not ex post facto in the sense that if you lived with someone for 2 years in the past but separated before the law was enacted there would be no consequences for you.