Despite the growing evidence that the modern world is more diverse and so is the nature of relationships that present in therapy, there remains paucity of empirical evidence on how cultural differences impact those in intercultural romantic ties. We conducted this comprehensive scoping review with the aim to outline the size and scope of existing research in the field of intercultural love and romantic relationships. We utilised a five-stage scoping review protocol provided by the Joanna Briggs Institute (JBI) manual for synthesis of evidence for a scoping review to ensure the rigour, transparency, and replicability of our findings. We reviewed peer-reviewed articles across nine electronic databases as well as “snowballing” the literature from the reference lists. A total of 46 studies were included in this review. We found that the majority of studies approached intercultural relationships from the deficit perspective, focusing on the domains of cultural difference that bring challenges to the relationship. These included culture-rooted differences in parenting standards and gender role expectations, among others. Often, cultural differences were found to bring power impedance into the relationship. Open communication and flexibility were found as important coping strategies. Differences in native language posed challenges to emotional communication between partners. These findings demonstrate that intercultural relationships face an additional layer of challenges and complexities that have to be recognised in therapy. We propose four domains of transmodality relational competencies on the basis of our findings to inform culturally sensitive therapeutic practice.