Is a therapist in breach of client confidentiality if he tells one things about another?

Yes, a therapist is in breach of client confidentiality if he tells one client things about another. Client confidentiality is the ethical and legal obligation of a therapist to keep all information about a client, including their identity, private. Therapists cannot share information about one client with another client without the first client's explicit consent. Breaching client confidentiality can have serious consequences, including damage to the therapeutic relationship, legal liability, and loss of the client's trust.