A woman?s maternal function has always been an issue of interest. The substitution of the father?s wanted and envied penis by the wish for a child is the point where the motherhood constellation starts. When the good-enough partner is found and the woman gets pregnant, a new long-lasting relationship emerges between the child and the mother. The most important feature of this relationship is the act of breastfeeding. This is discussed as a form of maternal sexuality that puts forward new sexual processes. The woman has to perform two different roles of being a sexual partner as well as a nurturing mother and this requires a difficult endeavor.