The main task of this paper is to draw a normative picture of close interpersonal bonds and demonstrate why they are ethically relevant and important. I start by showing that the notion of ‘close relationships’ is a notion in its own right—overlapping with but not reducible to the notion of ‘love,’ ‘friendship,’ or ‘kinship.’ Then, I go on to discuss particular features of close relationships. I start with consensuality, reciprocity, persistence in time. After that, I move on to non-instrumental treatment and the mutual sharing of responsibility, which is connected with treating the interests of the close other as one’s own. Another features I discuss are truthfulness in the way we narrate our autobiographical stories, openness to the close other’s co-creation of our narrative truth, and the readiness to co-create the narrative truth of the close other in return. Finally, I focus on trust; I show that the kind of trust which is characteristic of close relationships is connected with particular competences that a person should manifest in order to be a trustworthy close-relationship partner. From the fact that no person is morally infallible, it can be inferred that we need to depend on competent others in order to take full responsibility for ourselves as moral agents (we need to be inter-responsible). The people we choose to be in close relationships with are precisely such competent others; they are the guardians and the co-authors of our moral agency and our narrative identity.