Which of the following relationships is not permitted for a psychologist with someone they have had sexual intimacies with?

The prohibition on forming a relationship with current clients or patients is rooted in the ethical obligation of psychologists to maintain professional boundaries and ensure that the therapeutic environment remains safe and effective. Engaging in a sexual relationship with a current client can significantly impair the psychologist's objectivity and professional judgment, potentially leading to a conflict of interest. It can also create an imbalance of power in the therapeutic relationship, which undermines the client's ability to engage in the therapy process fully.

In contrast, while relationships with colleagues, family members, or friends may also come with ethical considerations, they do not violate the explicit boundaries and ethical guidelines as current client relationships do. Therefore, the clear restriction on maintaining sexual intimacies with current clients is a critical aspect of preserving the integrity of the therapeutic relationship and protecting client welfare.