This study is based on an interpersonal view of the specifics of addiction in a close relationship between parents and their children. It aims to explore the lived experiences of parents with the topic of addiction of their adult children, who does not want to treat their addiction. Special attention is focused to ascertaining the significance and essence of this experience for family relationships. The work is based on the theoretical grounding of current scientific knowledge in the context of addictions. It emphasizes the understanding of addiction and summarizes current knowledge about the impact of addiction on relationships. The research was conducted through four semi-structured interviews analysed by interpretive phenomenological analyses. The research tried to uncover topics of lived experience that appears in parents’ perception of relationship with adult offspring living with substance disorder which they do not want to treat. As part of the analysis, we identified 12 topics in four areas. The topics concern the emotional experience of the relationship with the offspring, the perception of oneself in the context of the situation, the very perception of the relationship with the son, and we lightly touched on the sources of coping. The results point to a certain, partially neglected area in addiction research, namely the complexity faced by people who have someone around them who uses addictive substances.