The situation you described is highly inappropriate and unethical in a therapeutic setting. Therapists are bound by strict professional guidelines and codes of ethics, which prohibit them from engaging in any personal relationships with their clients.
When a therapist expresses a desire to have a personal relationship with a client, it is a severe breach of professional boundaries and can be harmful to the client's well-being. It can also create significant emotional distress for the client and jeopardize the therapeutic process.
If such a situation were to occur, it is crucial for the client to reinforce their boundaries and immediately terminate the therapeutic relationship with that therapist. The client should also report the therapist's behavior to the appropriate licensing board or regulatory body so that appropriate action can be taken.
As for the possibility of it ever going back to a healthy relationship, it is highly unlikely and not advisable. The foundation of a therapeutic relationship is built on trust, objectivity, and professional boundaries. Once those boundaries have been violated, it becomes extremely challenging to re-establish the necessary trust and create a healthy therapeutic environment.
If a client finds themselves in such a situation, it is essential to seek support from a different therapist or mental health professional who can help process the experience and provide appropriate guidance moving forward. Therapists are meant to be a source of support and growth for their clients, and violating professional boundaries undermines the core principles of therapy and can have serious consequences for the client's well-being.