It is now the norm for couples to live together without getting married. This is called cohabitation. Unmarried couples do not have the same legal rights as married couples have on the breakdown of a relationship.
The common law marriage is a myth and does not exist.
If a property was purchased and placed in your cohabiting partners sole name you may still have a legal share / a financial interest in such a property if you contributed to the deposit when the property was purchased or you contributed financially to the mortgage payments or you were promised by your ex-partner a share of the property and you acted in reliance of that promise.
At Maria Fogg Family Law we can provide you with full legal advice as to Cohabitation Trust and Property Law.
Please contact us for further information and advice.