Couples must in turn pay the legal advice fees of the second partner. While every concubine agreement is different and depends on your individual circumstances, there are a few key things you should think about before seeking advice from a lawyer: a concubine agreement is essential for your common intentions to create a common home to be enforceable and offer the protection you seek. A concubine agreement is a document that can be enforced by the court if properly executed, provided that you have both been honest about your finances and have each received separate legal advice on its terms. A concubine agreement defines each partner`s property rights if your relationship were to collapse in the future. .