According to the BC Family Relations Act, the making of a claim for a division of property that says who gets what when a marriage ends doesn't apply to common-law relationships.
tax is the same for sure.
I am not 100% sure about the legal part. But at least the property is divided by each partner's effort. Generally homemaker and income earner are considered contributing the same effort. Same effort means 50-50. I guess a better lawyer may get more lor.
But sometime even in a divorce, you want the woman to get more, since she usually has your kids