In this essay, an ethical analysis is made of the effect of the sex robot on human relationships. The sexbot is a social robot specifically designed for sexual activity and companionship, using technological advances and Artificial Intelligence. From the perspective of virtue ethics, it is investigated how the sexbot will influence the ability to develop the virtuous character. By elaborating the role of relationships in virtue ethics and explaining how the sexbot relationship is different, it is concluded that the sexbot is negatively influencing this ability by restraining an important part of character development, namely the building of philia relationships. It does so by presenting a stereotypical view on attraction, habituating the users in a one-sided relationship without rejection and consent, preventing them to develop important virtues such as respect, care, empathy, courage, patience and perseverance and demotivating them from pursuing the virtuous life by being addictive and easy.