@Eve I've have it too. It's so hard to know that there are still some people I like a lot to whom I haven't told who I really was, but sometimes it's just so hard to find the right moment in a conversation and not just drop it like «oh, by the way, I'm a woman. kthxbye»
On the other hand I'll probably have to tell my in-laws this week-end, which worries me a little. I was once very confident about it but my wife and sister in law fear their reaction so… who knows what might happen ?