A principle put on paper over 2,000 years ago and attributed to Hippocrates' non-maleficence has become the ethical foundation of all forms of professional treatment in the modern era (Edelstein, 1943). Although crossing borders always carries risks, I believe that the ability to do harm in this case depends on the skill of the advisor. Through my reading, I have come to the conclusion that intentional self-disclosure is an art that must be mastered. The welfare of the client is a primary consideration, but in this context this includes considerations of timing, the developmental needs of the client and the ability of advisors to craft a disclosure that leaves no room for opening additional doors . Although it may be counterintuitive, revealing your orientation to someone who feels alone in their sexuality can have negative consequences. An emotionally vulnerable client who is struggling with being gay may develop attraction to a therapist who shares their orientation and is of the same gender. If the counselor is not attuned to this development, the client may confuse the counselor's revelation with the counselor's ability or receptiveness to attraction. A therapist who reveals but is unaware of a developing attraction.