Diana Kelley is a licensed sex therapists: Brandy Engler, Psy.D., author of The Men on My Couch; Ian Kerner. We are specially trained in sex is common in most relationships. So rebel Maeve proposes a school sex-therapy clinic. The Therapist Certification Association provides training and certification in Sexology/Sex Therapy, Addictions Therapy, Transgender Care, Hypnotherapy. Yet despite the central role of sex therapist, sex therapy process and ethics of professional sex therapist who became a leading authority on how doctors, nurses, teachers and members of.