ABSTRACT The current study explored the lived experience of parental infidelity; how individuals make sense of this experience and what its' implications are. Qualitative data were collected from individual, semi-structured interviews with six adult participants. An Interpretative Phenomenological Analysis methodology was used and a critical realist epistemological stance was taken. Analyses revealed findings of four master themes: adultification, challenges in romantic relationships, the psychological experience and the pathway to healing. These master themes were sub-categorized into super-ordinate themes as follows: adultification – becoming an emotional carer and awareness of parental sexuality, challenges in romantic relationships – fear of abandonment and relationship breakdown, intergenerational transmission of infidelity and differentiation, the psychological experience – an everlasting pain, the sense of self and loss: detachment and disconnection, the pathway to healing – restoration through destruction, perspective: intellectualization and understanding and honesty and openness. Theoretical, research and clinical implications alongside limitations and ideas for future research are discussed.