Diana~
I just posted to your other thread about the intimate areas, but I did want to put my 2 cents in here too. Oh and by the way...Welcome to Susan's. This is a great place (as you probably have already seen) for support.
Marco's and my relationship started as an affair. We were both married to men (both in the middle of divorces now). Me, being the 'girl scout' that I have been accused of being, could not live 'cheating'. I had never cheated before and dishonesty is just not a part of me. There were many factors involved in why our relationship began, but the short story is that my marriage had been over for about 5 years, it was just a matter of when the divorce was going to happen (my ex is psycho). Marco's situation was different. He was just trying to be something he couldn't be anymore. His ex has known about him all along, and although he is hurt that the marriage is ending, he has been supportive and Marco and he are able to remain friends. They have four kids, and his kids are a little 'wierded out' by Marco's transition, but having a dad that is supportive of our situation really helps the kids to deal with it in a healthy manner. My situation, on the other hand, was as soon as I admitted the affair to my ex, he called every family member and friend that I have and told them that I was a lesbian (which I have never identified as) and told everyone that I was crazy because I saw Marco (well he used his 'other' name) as a man. Since our split, he has 'found Jesus'. He damns me to hell every chance he gets and he makes our two kids' lives utter hell if they even try to reach out to me. No...my kids are not comfortable with it, but I am sure they could get used to it if it wasn't pounded into their heads everyday that I am an adulterous lesbian. I've tried explaining to my ex, I even apologized for hurting him, but this is all thrown back in my face and just this evening, as a matter of fact, he told me he hopes I burn in hell. It's really a torterous situation. My intimate life has become a matter of public record in my divorce proceedings and my family and friends (except one friend) have turned their backs on me. I've tried to explain to all of them. The thing that baffles me is, they all knew how unhappy I was in my marriage; they knew how abusive my ex is, but they are all so baffled how I could leave and turn to my life of 'sin'.
Well...my life is way too full to have to deal with judgers, so I just stay away from them. Sure it hurts. It hurts that my kids reject me because my ex has engrained in them so deeply that it would be the ultimate act of betrayal to love me. I just have faith that someday, they will be able to process this through adult minds and know that I have always been right here for them. I didn't turn my back on anyone...it was others who chose to shut me out.
Now...after all my ravings...my advice: tell only absolutely those who would need to know. If it is inconsequential and people aren't going to find out anyway, don't tell them. If you don't have someone in your life like my ex who is going to follow you around and tell everyone 'his' version, then it's not really hiding anything. If he had been born with some other birth defect and had it surgically fixed, you probably woudn't share that. They just need to know him for the man he is. Maybe let him decide if he wants to tell people.

Pam