This paper begins by presenting the general factors which determine the sexuality of the borderline patient, emphasizing the fact that, in such patients, one cannot speak about a particular sexuality, it being rather more scholarly to speak about a spectrum of sexualities, with clinical manifestations of varying severity. Subsequently, it focuses on the points of intersection between borderline sexuality and the concepts of perversion and perversity. Finally, an effort is made to show how the countless combinations of general factors lead to a variety of sexual fantasies which, in connection with all sorts of existing object relations, culminates in particular sexual tendencies and behaviours. In conclusion, it is noted that there is a lack of libidinal gratification which, to a great extent, has to do with the fact that the object of a borderline patient is not a total object, and therefore his object relation does not have the capacity to become a relation of libidinal gratification and love, except through the integration of the images of the self and the other during therapy.