The world is undergoing the mixing of populations at least two times more intense than fifty years ago. People across the globe, led on one side by curiosity, the desire to know and understand the different nations, cultures, religions ..., the desire to broaden its horizons, and on the other hand by the search of a better life. On these routes drawn by different wills destinies intersect dissimilar people and this is then faced with diverse national, cultural, religious, linguistic, they choose to live ... or not a story love with a 'stranger' to its own values. I want to understand this part of the population, statistically minority who decides to defy prohibitions and to live with a person of another faith, and despite those society and especially religious representatives who promote homogamous couples. Why choose a foreign when the vast majority of people prefer to marry someone who theirs resembles (from the point of view of religion and culture)? Under what conditions is it possible such a marriage? What are the relations of mixed couples with society? Through our research, based on the theory of gift Marcel Mauss: giving, receiving, making, we want to give the answers to all these questions.
