This work investigates the fundamental contribution of interpersonal relationships in the configuration of personal identity, based on the consideration of the person as an essentially open and relational being, and of the body as a symbolic reality of the human vocation to love. Understanding that personal identity consists of the self-representation of oneself as a singular being and in homogeneity with others, and identifying through continuous changes and decisions as a being called to love, its achievement will require a gradual process that encompasses its entire existence. The identity stages through which it progresses - affiliation, nuptiality, paternity - require the acquisition of certain developmental capacities that provide the...