The courts have a duty to develop services that will meet the needs of society  Fairness requires that cohabiting couples share their property on separation: when couples have lived together for a long period (such as five years or more) they will have gained benefits at each other’s expense but also suffered disadvantages for the other’s benefit. If one partner gives up a career to raise children or support the other in their career, they are seriously disadvantaged upon separation. Where the other partner has gained as a result of this sacrifice, they should compensate the former, so that the two parties can move towards independence in equal positions. Parties may choose not to marry, but this should not have to cause such financial harm to one partner.