One of the main elements of the civil-constitutional approach to private law is the overcoming of the Public/Private dichotomy, as a way of subduing the Civil Code to the hierarchy of values contained in the Constitution. The crossing of these borders causes a true revolution in the private law because the classic theory usually considered the private law in a superior position in regard of the Constitution; the individual values prevailing over the social ones. This change of perspective brings out problems in regard to its foundation. The civilconstitutional theory must avoid the trap of justifying the sociality of the nonpatrimonial private law in the necessity of making social prevailing over individual. It is necessary to acknowledge that there is a tension - but not a conflict - between individualization and socialization. In this order, this dissertation intends to establish this tension through the application of the Discourse Theory of Jürgen Habermas in Law - a distinguished foundation of the civil-constitutional approach to private law.