Thanks for all the information Leslie. Unfortunately, it's worse than that. You're right, telling your CO is a very bad idea. Telling anyone in the unit is a bad idea. They have a duty to report it. In fact, you don't have to say anything. The DADT policy states that if there is even a PERCEPTION of being homosexual, being real or not, then it is even to get you into trouble. Therefore, they don't need a reason such as lied to get your way in. The policy itself gives it to them. The same goes for affairs and fraterinization (sp?), so this isn't discrimination. When you get discharged, they will drag their feet, but more than just 6 months. They have the legal right to keep you the rest of your enlistment. I have seen several Marines popped for drugs with 2yrs left for one, and 1yr left for the other. Both cases, they were kept the rest of they're term, then given Discharge under Other than Honorable Conditions. Not to mention the entire time your in, all the riducule you'll get. It doesn't matter if anyone you tell believes you, they have an obligation to report it. Some very few may not, and for that you should be so lucky.
If you're thinking about seeing a therapist, don't tell anyone about it. Even if you say its just a regular one because of psych issues, it's just as bad as being gay. They make you see one of their MHU professionals and make a mark on your record, even if it all gets 'sorted out.' The worst they'll do is keep you under constant watch until you get 'better' so that you don't commit suicide. Mental discharges can take just as long because they have to make sure you're not going to do anything stupid as soon as you get out. The best discharge out of this is the 'failure to adapt to military lifestyle,' which isn't an Honorable Discharge.
Anyways, I'm sorry if this sounds so dire (I have a positive view on the military and love the Corps), but I am telling you the way it is (at least from my perspective based on my experience). The best idea is to just finish your term, get your Honorable Discharge, and move on. In boot, they told us the fastest way off the Island is to graduate; that still applies.
P.S. If anyone has read any of these policies or been through these situations and I posted anything inaccurate, please tell me. This is all information based on my experiences talking to other Marines who have gone through very similar experiences and some reading of aformentioned policies. This information has been collected over the past several years and could have changed in that time, but this info is accurate and true to the best of my knowledge and understanding. Thanks, and bless you all for reading! 😘