Contrary to popular belief, when it comes to relationship breakdowns, the assets of unmarried couples are treated differently to those of their married counterparts. This equally true of same-sex and heterosexual relationships.
The notion of “common law” rights is a misconception - there are no automatic right to the sharing of assets following a relationship breakdown. That’s why cohabitation agreements are so important.
Consider a cohab agreement if you have property such as a house, car or other assets.
In long term relationships, cohabitation agreements should be reviewed regularly to take account of circumstances which change over time - for example if you and your partner have, or plan to have, children.