Henk Sanders INTAMS review | Volume 13 | Issue 1 | Spring 2007 | Pages 19 > 32 Cohabitation: An Obstacle or an Obeisance to Marriage? (Summary) The central question in this contribution is what role does “unmarried cohabitation” play in the so-called “decline of marriage” and whether there is any mention at all of a new life form that comprises an alternative for marriage. The spread of unmarried cohabitation is massive and there is even mention of a shift in the way people start relationships. Still the impact of unmarried cohabitation as a new alternative life form is relativised by its contextualisation in time and place. In most European countries cohabitation turns out to be an extended prelude to marriage, sometimes even including parenthood. Still a minority of couples seems to be cohabiting in a non-marital way. But all cohabitation is not alike. Consequently the author focuses on the sociologically different forms of unmarried cohabitation among young adults, but also points at some important shifts in the concept of love and in the meaning of marriage and cohabitation. Lots of contemporary couples cohabit for “strategic” reasons in a permanent-loose, provisionally definitive relationship. In this way for many young adults cohabitation is not so much an alternative to marriage, for it seems to be connected to and intertwined with marriage as a process. Contemporary young adults are not so much as against marriage as they are against divorce. Most of the young adults also dream of a permanent relationship and try to overcome the fear of a possible dissolution by scouting each others’ marital capacities while cohabiting. These insights might leave the door ajar, so to speak, for a more nuanced ethical thinking. The author ends with some first thoughts about the question whether Christians could also integrate cohabitation in one way or another into the Christian ideal of marriage.