It is a stable de facto union between people of different sex, to which the law in certain cases, and after a certain time, the granting of legal effects. They are people who live together in a marital life but are not united in marriage. In some countries this situation is recorded in a registry as proof of the union. In which there is no such record, it must be proven with witnesses.
Although marriage is the genre of human rights and obligations under the law, in many parts of the world, everything extends to the union of couples in concubinage, likewise, the couple is reached by a series of rights and obligations.
People who are in a common-law relationship or are not married are called concubines / nos. It should be noted; That the concubinage should not be sporadic. The relationship of the concubines cannot be momentary or accidental. It must be durable. It is generally established between two years and three years.
The concept of concubinage dates back to Ancient Rome and Biblical times. In general, the concubinage was voluntary (already the sea by an agreement between the man and the woman in the man and the woman's family) since this relationship of economic security was considered to the woman. Existence, in any case, the servile concubinage that supposed the sexual slavery of women.
In ancient times and in some current Eastern cultures, the figure of the concubine is very recurrent. For example, men who have a prominent economic and power position, in addition to their formal wife, also have a variety of concubines.
These generally come from a lower social class. This concubine union guaranteed these women an improvement in their living conditions and also assured their families greater economic and social protection.
In the Roman Empire and ancient China, the concubine had a lower legal status than marriage. This means that a man has a wife and a concubine simultaneously. Western laws, on the other hand, only allowed monogamous marriage and left the concubine out of any legal protection.